Chemistry that passes the audit, spares the effluent plant, and dyes right the first time.

Water-Based
ZDHC Level 3 Compliant
Cotton Knit
snowboarder woman with a dog

Reactive Dyes

Dyechem has supplied reactive dyes since it was founded in 1975. The portfolio for cotton and viscose runs thirteen series — over a hundred dyes selected for high fixation, low salt loads and compliance paperwork that holds up — each backed by a published recipe, laboratory shade matching and on-site technical support.
Substrate
Cotton and cellulosics
Compliance
ZDHC Level 3 MRSL
Application
Exhaust, pad-batch and printing
Range
Full shade range
Form
Reactive dye powder
Reactive Dyes

Overview

Reactive dyeing has always been unforgiving — shade depends on water quality, salt and alkali dosing, temperature ramp and timing, and one variable out of range turns a batch into a reprocess. What has changed is the price of getting it wrong. A re-dye comes close to doubling the input cost of a batch, effluent is metered and charged, and discharge norms tighten with every revision.
Dyechem was founded in this trade. The company began in 1975 distributing dyes for the major conglomerates, and fifty years later the range it supplies is selected against the fastness and reproducibility standards its own laboratory tests to — high-fixation, low-salt chemistry, azo-free and REACH compliant for export — sold alongside the auxiliaries and technical support needed to run it. One supplier for the complete dyeing operation.
Man in the mountains
Skier in the slope
Reactive Dyes

The Challenge

The chemistry on a dyehouse floor is no longer its own business. Brands now audit their supply chains two tiers down, restricted-substance lists grow with every revision, and export orders move on documentation as much as on shade. A drum that arrives without paperwork that survives an audit is a liability, whatever it costs per kilo.
Skier stand on the slope
Winter kayaking scene
Winter hut
The effluent plant is the other buyer every batch has to satisfy. Every kilogram of salt and every gram of unfixed dye leaves the machine as effluent the dyehouse pays to treat — and when dye strength drifts between lots, or a shade card fails to reproduce on the floor's own water, the reprocess doubles the water, the fuel and the load on the drain.
Reactive Dyes

The Solution

The range is selected against exactly those costs. High-fixation chemistry puts more dye on the fibre and less in the drain, the low-salt series cut the load on the effluent system, and every dye is azo-free with ZDHC Level 3 behind it. Thirteen series map the whole job — M-Brand fixes cold at 30°C, the bifunctional ME, RMB, CN and FGFN ranges work the 60°C middle where fuel is saved, HE runs the hot-exhaust end, VS covers everyday exhaust, pad-batch and printing, H is made for printing, L holds pales level, and the XLRN, XL-RGB and XLRR trichromats plus the knits Speciality set take the count past a hundred dyes.
Womain in blue snowsuit
Deer on ice
Winter scene
Right first time is a recipe problem before it is a machine problem, so every series arrives with its method attached — salt and alkali loadings by shade depth, temperature and time profiles, print-paste ratios, and the full after-treatment sequence that fixes fastness properly. Documented processes cover exhaust on jig and winch, one-bath cold pad-batch with 24-hour fixation, and printing through the H and HE series, with the complete technical tables series by series in the full catalogue.
Professional skier

Reactive Dyes

Reactive Dyes

Performance Results

Shade matching runs through spectrophotometer testing and in-house fastness trials for wash, light and rub. Sample testing is done on the customer's own fabric before bulk, and recipe development is aimed squarely at reducing effluent load, fuel and chemical spend rather than just hitting the shade.
snowboarder woman with a dog
Fixation

More dye on the fibre, less in the effluent

0%
Years of Experience

We pride ourselves on consistency

0
ZDHC Level 3

MRSL v3.1 — documentation that survives the audit

0%

Field technicians attend site for dyeing and printing troubleshooting, and every consignment is checked before despatch under a Right First Time protocol. Fifty years in the trade built one of the leading supplier networks in Eastern India — and it means the answer to most dyehouse problems already exists somewhere in the building.

Reactive Dyes

Final thoughts

Thirteen series and over a hundred dyes selected for what dyeing costs now — high fixation, low salt, azo-free chemistry with ZDHC Level 3 and REACH behind it — each with a published recipe, pre-bulk testing on your own fabric, and technicians who come to site when something goes wrong.

Reactive Dyes

How It Runs

Select the Series
Recipe and Trial
Sample Before Bulk
Right First Time
Matched to substrate, shade depth and process
Salt, alkali and temperature profile supplied
Tested on your fabric, in our laboratory
Every consignment checked before despatch
Team discussing the project
Previous Project
Next Project

More Projects

Chemistry that passes the audit, spares the effluent plant, and dyes right the first time.

Water-Based
ZDHC Level 3 Compliant
Cotton Knit
snowboarder woman with a dog

Reactive Dyes

Dyechem has supplied reactive dyes since it was founded in 1975. The portfolio for cotton and viscose runs thirteen series — over a hundred dyes selected for high fixation, low salt loads and compliance paperwork that holds up — each backed by a published recipe, laboratory shade matching and on-site technical support.
Substrate
Cotton and cellulosics
Compliance
ZDHC Level 3 MRSL
Application
Exhaust, pad-batch and printing
Range
Full shade range
Form
Reactive dye powder
Reactive Dyes

Overview

Reactive dyeing has always been unforgiving — shade depends on water quality, salt and alkali dosing, temperature ramp and timing, and one variable out of range turns a batch into a reprocess. What has changed is the price of getting it wrong. A re-dye comes close to doubling the input cost of a batch, effluent is metered and charged, and discharge norms tighten with every revision.
Dyechem was founded in this trade. The company began in 1975 distributing dyes for the major conglomerates, and fifty years later the range it supplies is selected against the fastness and reproducibility standards its own laboratory tests to — high-fixation, low-salt chemistry, azo-free and REACH compliant for export — sold alongside the auxiliaries and technical support needed to run it. One supplier for the complete dyeing operation.
Man in the mountains
Skier in the slope
Reactive Dyes

The Challenge

The chemistry on a dyehouse floor is no longer its own business. Brands now audit their supply chains two tiers down, restricted-substance lists grow with every revision, and export orders move on documentation as much as on shade. A drum that arrives without paperwork that survives an audit is a liability, whatever it costs per kilo.
Skier stand on the slope
Winter kayaking scene
Winter hut
The effluent plant is the other buyer every batch has to satisfy. Every kilogram of salt and every gram of unfixed dye leaves the machine as effluent the dyehouse pays to treat — and when dye strength drifts between lots, or a shade card fails to reproduce on the floor's own water, the reprocess doubles the water, the fuel and the load on the drain.
Reactive Dyes

The Solution

The range is selected against exactly those costs. High-fixation chemistry puts more dye on the fibre and less in the drain, the low-salt series cut the load on the effluent system, and every dye is azo-free with ZDHC Level 3 behind it. Thirteen series map the whole job — M-Brand fixes cold at 30°C, the bifunctional ME, RMB, CN and FGFN ranges work the 60°C middle where fuel is saved, HE runs the hot-exhaust end, VS covers everyday exhaust, pad-batch and printing, H is made for printing, L holds pales level, and the XLRN, XL-RGB and XLRR trichromats plus the knits Speciality set take the count past a hundred dyes.
Womain in blue snowsuit
Deer on ice
Winter scene
Right first time is a recipe problem before it is a machine problem, so every series arrives with its method attached — salt and alkali loadings by shade depth, temperature and time profiles, print-paste ratios, and the full after-treatment sequence that fixes fastness properly. Documented processes cover exhaust on jig and winch, one-bath cold pad-batch with 24-hour fixation, and printing through the H and HE series, with the complete technical tables series by series in the full catalogue.
Professional skier

Reactive Dyes

Reactive Dyes

Performance Results

Shade matching runs through spectrophotometer testing and in-house fastness trials for wash, light and rub. Sample testing is done on the customer's own fabric before bulk, and recipe development is aimed squarely at reducing effluent load, fuel and chemical spend rather than just hitting the shade.
snowboarder woman with a dog
Fixation

More dye on the fibre, less in the effluent

0%
Years of Experience

We pride ourselves on consistency

0
ZDHC Level 3

MRSL v3.1 — documentation that survives the audit

0%

Field technicians attend site for dyeing and printing troubleshooting, and every consignment is checked before despatch under a Right First Time protocol. Fifty years in the trade built one of the leading supplier networks in Eastern India — and it means the answer to most dyehouse problems already exists somewhere in the building.

Reactive Dyes

Final thoughts

Thirteen series and over a hundred dyes selected for what dyeing costs now — high fixation, low salt, azo-free chemistry with ZDHC Level 3 and REACH behind it — each with a published recipe, pre-bulk testing on your own fabric, and technicians who come to site when something goes wrong.

Reactive Dyes

How It Runs

Select the Series
Recipe and Trial
Sample Before Bulk
Right First Time
Matched to substrate, shade depth and process
Salt, alkali and temperature profile supplied
Tested on your fabric, in our laboratory
Every consignment checked before despatch
Team discussing the project
Previous Project
Next Project

More Projects

Chemistry that passes the audit, spares the effluent plant, and dyes right the first time.

Water-Based
ZDHC Level 3 Compliant
Cotton Knit
snowboarder woman with a dog

Reactive Dyes

Dyechem has supplied reactive dyes since it was founded in 1975. The portfolio for cotton and viscose runs thirteen series — over a hundred dyes selected for high fixation, low salt loads and compliance paperwork that holds up — each backed by a published recipe, laboratory shade matching and on-site technical support.
Substrate
Cotton and cellulosics
Compliance
Application
Exhaust, pad-batch and printing
Range
Full shade range
Form
Reactive dye powder
Reactive Dyes

Overview

Reactive dyeing has always been unforgiving — shade depends on water quality, salt and alkali dosing, temperature ramp and timing, and one variable out of range turns a batch into a reprocess. What has changed is the price of getting it wrong. A re-dye comes close to doubling the input cost of a batch, effluent is metered and charged, and discharge norms tighten with every revision.
Dyechem was founded in this trade. The company began in 1975 distributing dyes for the major conglomerates, and fifty years later the range it supplies is selected against the fastness and reproducibility standards its own laboratory tests to — high-fixation, low-salt chemistry, azo-free and REACH compliant for export — sold alongside the auxiliaries and technical support needed to run it. One supplier for the complete dyeing operation.
Man in the mountains
Skier in the slope
Reactive Dyes

The Challenge

The chemistry on a dyehouse floor is no longer its own business. Brands now audit their supply chains two tiers down, restricted-substance lists grow with every revision, and export orders move on documentation as much as on shade. A drum that arrives without paperwork that survives an audit is a liability, whatever it costs per kilo.
Skier stand on the slope
Winter kayaking scene
Winter hut
The effluent plant is the other buyer every batch has to satisfy. Every kilogram of salt and every gram of unfixed dye leaves the machine as effluent the dyehouse pays to treat — and when dye strength drifts between lots, or a shade card fails to reproduce on the floor's own water, the reprocess doubles the water, the fuel and the load on the drain.
Reactive Dyes

The Solution

The range is selected against exactly those costs. High-fixation chemistry puts more dye on the fibre and less in the drain, the low-salt series cut the load on the effluent system, and every dye is azo-free with ZDHC Level 3 behind it. Thirteen series map the whole job — M-Brand fixes cold at 30°C, the bifunctional ME, RMB, CN and FGFN ranges work the 60°C middle where fuel is saved, HE runs the hot-exhaust end, VS covers everyday exhaust, pad-batch and printing, H is made for printing, L holds pales level, and the XLRN, XL-RGB and XLRR trichromats plus the knits Speciality set take the count past a hundred dyes.
Womain in blue snowsuit
Deer on ice
Winter scene
Right first time is a recipe problem before it is a machine problem, so every series arrives with its method attached — salt and alkali loadings by shade depth, temperature and time profiles, print-paste ratios, and the full after-treatment sequence that fixes fastness properly. Documented processes cover exhaust on jig and winch, one-bath cold pad-batch with 24-hour fixation, and printing through the H and HE series, with the complete technical tables series by series in the full catalogue.
Professional skier

Reactive Dyes

Reactive Dyes

Performance Results

Shade matching runs through spectrophotometer testing and in-house fastness trials for wash, light and rub. Sample testing is done on the customer's own fabric before bulk, and recipe development is aimed squarely at reducing effluent load, fuel and chemical spend rather than just hitting the shade.
snowboarder woman with a dog
Fixation

More dye on the fibre, less in the effluent

0%
Years of Experience

We pride ourselves on consistency

0
ZDHC Level 3

MRSL v3.1 — documentation that survives the audit

0%

Field technicians attend site for dyeing and printing troubleshooting, and every consignment is checked before despatch under a Right First Time protocol. Fifty years in the trade built one of the leading supplier networks in Eastern India — and it means the answer to most dyehouse problems already exists somewhere in the building.

Reactive Dyes

Final thoughts

Thirteen series and over a hundred dyes selected for what dyeing costs now — high fixation, low salt, azo-free chemistry with ZDHC Level 3 and REACH behind it — each with a published recipe, pre-bulk testing on your own fabric, and technicians who come to site when something goes wrong.

Reactive Dyes

How It Runs

Select the Series
Recipe and Trial
Sample Before Bulk
Right First Time
Matched to substrate, shade depth and process
Salt, alkali and temperature profile supplied
Tested on your fabric, in our laboratory
Every consignment checked before despatch
Team discussing the project
Previous Project
Chevron Right
Next Project
Chevron Right

More Projects

A finish is hard to judge on a screen.
So we’ll send you one.

Name the material and the finish. We’ll develop a sample and get it to you.

Team working in an office watching at a presentation

Based in Kolkata since 1975.

Stay in the Loop

Stay informed about our latest news, updates by subscribing to our newsletter.

We respect your inbox. No spam, just valuable updates.

5, Ashu Biswas Road, Kolkata: 700019.

Dyechem International is a company registered in India. Water-based coatings, finishes, and textile chemicals are manufactured and supplied by Dyechem International.

© 2026 Dyechem — All rights reserved.
Chevron up

Chemistry that passes the audit, spares the effluent plant, and dyes right the first time.

Water-Based
ZDHC Level 3 Compliant
Cotton Knit
snowboarder woman with a dog

Reactive Dyes

Dyechem has supplied reactive dyes since it was founded in 1975. The portfolio for cotton and viscose runs thirteen series — over a hundred dyes selected for high fixation, low salt loads and compliance paperwork that holds up — each backed by a published recipe, laboratory shade matching and on-site technical support.
Substrate
Cotton and cellulosics
Compliance
ZDHC Level 3 MRSL
Application
Exhaust, pad-batch and printing
Range
Full shade range
Form
Reactive dye powder
Reactive Dyes

Overview

Reactive dyeing has always been unforgiving — shade depends on water quality, salt and alkali dosing, temperature ramp and timing, and one variable out of range turns a batch into a reprocess. What has changed is the price of getting it wrong. A re-dye comes close to doubling the input cost of a batch, effluent is metered and charged, and discharge norms tighten with every revision.
Dyechem was founded in this trade. The company began in 1975 distributing dyes for the major conglomerates, and fifty years later the range it supplies is selected against the fastness and reproducibility standards its own laboratory tests to — high-fixation, low-salt chemistry, azo-free and REACH compliant for export — sold alongside the auxiliaries and technical support needed to run it. One supplier for the complete dyeing operation.
Man in the mountains
Skier in the slope
Reactive Dyes

The Challenge

The chemistry on a dyehouse floor is no longer its own business. Brands now audit their supply chains two tiers down, restricted-substance lists grow with every revision, and export orders move on documentation as much as on shade. A drum that arrives without paperwork that survives an audit is a liability, whatever it costs per kilo.
Skier stand on the slope
Winter kayaking scene
Winter hut
The effluent plant is the other buyer every batch has to satisfy. Every kilogram of salt and every gram of unfixed dye leaves the machine as effluent the dyehouse pays to treat — and when dye strength drifts between lots, or a shade card fails to reproduce on the floor's own water, the reprocess doubles the water, the fuel and the load on the drain.
Reactive Dyes

The Solution

The range is selected against exactly those costs. High-fixation chemistry puts more dye on the fibre and less in the drain, the low-salt series cut the load on the effluent system, and every dye is azo-free with ZDHC Level 3 behind it. Thirteen series map the whole job — M-Brand fixes cold at 30°C, the bifunctional ME, RMB, CN and FGFN ranges work the 60°C middle where fuel is saved, HE runs the hot-exhaust end, VS covers everyday exhaust, pad-batch and printing, H is made for printing, L holds pales level, and the XLRN, XL-RGB and XLRR trichromats plus the knits Speciality set take the count past a hundred dyes.
Womain in blue snowsuit
Deer on ice
Winter scene
Right first time is a recipe problem before it is a machine problem, so every series arrives with its method attached — salt and alkali loadings by shade depth, temperature and time profiles, print-paste ratios, and the full after-treatment sequence that fixes fastness properly. Documented processes cover exhaust on jig and winch, one-bath cold pad-batch with 24-hour fixation, and printing through the H and HE series, with the complete technical tables series by series in the full catalogue.
Professional skier

Reactive Dyes

Reactive Dyes

Performance Results

Shade matching runs through spectrophotometer testing and in-house fastness trials for wash, light and rub. Sample testing is done on the customer's own fabric before bulk, and recipe development is aimed squarely at reducing effluent load, fuel and chemical spend rather than just hitting the shade.
snowboarder woman with a dog
Fixation

More dye on the fibre, less in the effluent

0%
Years of Experience

We pride ourselves on consistency

0
ZDHC Level 3

MRSL v3.1 — documentation that survives the audit

0%

Field technicians attend site for dyeing and printing troubleshooting, and every consignment is checked before despatch under a Right First Time protocol. Fifty years in the trade built one of the leading supplier networks in Eastern India — and it means the answer to most dyehouse problems already exists somewhere in the building.

Reactive Dyes

Final thoughts

Thirteen series and over a hundred dyes selected for what dyeing costs now — high fixation, low salt, azo-free chemistry with ZDHC Level 3 and REACH behind it — each with a published recipe, pre-bulk testing on your own fabric, and technicians who come to site when something goes wrong.

Reactive Dyes

How It Runs

Select the Series
Recipe and Trial
Sample Before Bulk
Right First Time
Matched to substrate, shade depth and process
Salt, alkali and temperature profile supplied
Tested on your fabric, in our laboratory
Every consignment checked before despatch
Team discussing the project
Previous Project
Next Project

More Projects

Chemistry that passes the audit, spares the effluent plant, and dyes right the first time.

Water-Based
ZDHC Level 3 Compliant
Cotton Knit
snowboarder woman with a dog

Reactive Dyes

Dyechem has supplied reactive dyes since it was founded in 1975. The portfolio for cotton and viscose runs thirteen series — over a hundred dyes selected for high fixation, low salt loads and compliance paperwork that holds up — each backed by a published recipe, laboratory shade matching and on-site technical support.
Substrate
Cotton and cellulosics
Compliance
ZDHC Level 3 MRSL
Application
Exhaust, pad-batch and printing
Range
Full shade range
Form
Reactive dye powder
Reactive Dyes

Overview

Reactive dyeing has always been unforgiving — shade depends on water quality, salt and alkali dosing, temperature ramp and timing, and one variable out of range turns a batch into a reprocess. What has changed is the price of getting it wrong. A re-dye comes close to doubling the input cost of a batch, effluent is metered and charged, and discharge norms tighten with every revision.
Dyechem was founded in this trade. The company began in 1975 distributing dyes for the major conglomerates, and fifty years later the range it supplies is selected against the fastness and reproducibility standards its own laboratory tests to — high-fixation, low-salt chemistry, azo-free and REACH compliant for export — sold alongside the auxiliaries and technical support needed to run it. One supplier for the complete dyeing operation.
Man in the mountains
Skier in the slope
Reactive Dyes

The Challenge

The chemistry on a dyehouse floor is no longer its own business. Brands now audit their supply chains two tiers down, restricted-substance lists grow with every revision, and export orders move on documentation as much as on shade. A drum that arrives without paperwork that survives an audit is a liability, whatever it costs per kilo.
Skier stand on the slope
Winter kayaking scene
Winter hut
The effluent plant is the other buyer every batch has to satisfy. Every kilogram of salt and every gram of unfixed dye leaves the machine as effluent the dyehouse pays to treat — and when dye strength drifts between lots, or a shade card fails to reproduce on the floor's own water, the reprocess doubles the water, the fuel and the load on the drain.
Reactive Dyes

The Solution

The range is selected against exactly those costs. High-fixation chemistry puts more dye on the fibre and less in the drain, the low-salt series cut the load on the effluent system, and every dye is azo-free with ZDHC Level 3 behind it. Thirteen series map the whole job — M-Brand fixes cold at 30°C, the bifunctional ME, RMB, CN and FGFN ranges work the 60°C middle where fuel is saved, HE runs the hot-exhaust end, VS covers everyday exhaust, pad-batch and printing, H is made for printing, L holds pales level, and the XLRN, XL-RGB and XLRR trichromats plus the knits Speciality set take the count past a hundred dyes.
Womain in blue snowsuit
Deer on ice
Winter scene
Right first time is a recipe problem before it is a machine problem, so every series arrives with its method attached — salt and alkali loadings by shade depth, temperature and time profiles, print-paste ratios, and the full after-treatment sequence that fixes fastness properly. Documented processes cover exhaust on jig and winch, one-bath cold pad-batch with 24-hour fixation, and printing through the H and HE series, with the complete technical tables series by series in the full catalogue.
Professional skier

Reactive Dyes

Reactive Dyes

Performance Results

Shade matching runs through spectrophotometer testing and in-house fastness trials for wash, light and rub. Sample testing is done on the customer's own fabric before bulk, and recipe development is aimed squarely at reducing effluent load, fuel and chemical spend rather than just hitting the shade.
snowboarder woman with a dog
Fixation

More dye on the fibre, less in the effluent

0%
Years of Experience

We pride ourselves on consistency

0
ZDHC Level 3

MRSL v3.1 — documentation that survives the audit

0%

Field technicians attend site for dyeing and printing troubleshooting, and every consignment is checked before despatch under a Right First Time protocol. Fifty years in the trade built one of the leading supplier networks in Eastern India — and it means the answer to most dyehouse problems already exists somewhere in the building.

Reactive Dyes

Final thoughts

Thirteen series and over a hundred dyes selected for what dyeing costs now — high fixation, low salt, azo-free chemistry with ZDHC Level 3 and REACH behind it — each with a published recipe, pre-bulk testing on your own fabric, and technicians who come to site when something goes wrong.

Reactive Dyes

How It Runs

Select the Series
Recipe and Trial
Sample Before Bulk
Right First Time
Matched to substrate, shade depth and process
Salt, alkali and temperature profile supplied
Tested on your fabric, in our laboratory
Every consignment checked before despatch
Team discussing the project
Previous Project
Next Project

More Projects

Chemistry that passes the audit, spares the effluent plant, and dyes right the first time.

Water-Based
ZDHC Level 3 Compliant
Cotton Knit
snowboarder woman with a dog

Reactive Dyes

Dyechem has supplied reactive dyes since it was founded in 1975. The portfolio for cotton and viscose runs thirteen series — over a hundred dyes selected for high fixation, low salt loads and compliance paperwork that holds up — each backed by a published recipe, laboratory shade matching and on-site technical support.
Substrate
Cotton and cellulosics
Compliance
Application
Exhaust, pad-batch and printing
Range
Full shade range
Form
Reactive dye powder
Reactive Dyes

Overview

Reactive dyeing has always been unforgiving — shade depends on water quality, salt and alkali dosing, temperature ramp and timing, and one variable out of range turns a batch into a reprocess. What has changed is the price of getting it wrong. A re-dye comes close to doubling the input cost of a batch, effluent is metered and charged, and discharge norms tighten with every revision.
Dyechem was founded in this trade. The company began in 1975 distributing dyes for the major conglomerates, and fifty years later the range it supplies is selected against the fastness and reproducibility standards its own laboratory tests to — high-fixation, low-salt chemistry, azo-free and REACH compliant for export — sold alongside the auxiliaries and technical support needed to run it. One supplier for the complete dyeing operation.
Man in the mountains
Skier in the slope
Reactive Dyes

The Challenge

The chemistry on a dyehouse floor is no longer its own business. Brands now audit their supply chains two tiers down, restricted-substance lists grow with every revision, and export orders move on documentation as much as on shade. A drum that arrives without paperwork that survives an audit is a liability, whatever it costs per kilo.
Skier stand on the slope
Winter kayaking scene
Winter hut
The effluent plant is the other buyer every batch has to satisfy. Every kilogram of salt and every gram of unfixed dye leaves the machine as effluent the dyehouse pays to treat — and when dye strength drifts between lots, or a shade card fails to reproduce on the floor's own water, the reprocess doubles the water, the fuel and the load on the drain.
Reactive Dyes

The Solution

The range is selected against exactly those costs. High-fixation chemistry puts more dye on the fibre and less in the drain, the low-salt series cut the load on the effluent system, and every dye is azo-free with ZDHC Level 3 behind it. Thirteen series map the whole job — M-Brand fixes cold at 30°C, the bifunctional ME, RMB, CN and FGFN ranges work the 60°C middle where fuel is saved, HE runs the hot-exhaust end, VS covers everyday exhaust, pad-batch and printing, H is made for printing, L holds pales level, and the XLRN, XL-RGB and XLRR trichromats plus the knits Speciality set take the count past a hundred dyes.
Womain in blue snowsuit
Deer on ice
Winter scene
Right first time is a recipe problem before it is a machine problem, so every series arrives with its method attached — salt and alkali loadings by shade depth, temperature and time profiles, print-paste ratios, and the full after-treatment sequence that fixes fastness properly. Documented processes cover exhaust on jig and winch, one-bath cold pad-batch with 24-hour fixation, and printing through the H and HE series, with the complete technical tables series by series in the full catalogue.
Professional skier

Reactive Dyes

Reactive Dyes

Performance Results

Shade matching runs through spectrophotometer testing and in-house fastness trials for wash, light and rub. Sample testing is done on the customer's own fabric before bulk, and recipe development is aimed squarely at reducing effluent load, fuel and chemical spend rather than just hitting the shade.
snowboarder woman with a dog
Fixation

More dye on the fibre, less in the effluent

0%
Years of Experience

We pride ourselves on consistency

0
ZDHC Level 3

MRSL v3.1 — documentation that survives the audit

0%

Field technicians attend site for dyeing and printing troubleshooting, and every consignment is checked before despatch under a Right First Time protocol. Fifty years in the trade built one of the leading supplier networks in Eastern India — and it means the answer to most dyehouse problems already exists somewhere in the building.

Reactive Dyes

Final thoughts

Thirteen series and over a hundred dyes selected for what dyeing costs now — high fixation, low salt, azo-free chemistry with ZDHC Level 3 and REACH behind it — each with a published recipe, pre-bulk testing on your own fabric, and technicians who come to site when something goes wrong.

Reactive Dyes

How It Runs

Select the Series
Recipe and Trial
Sample Before Bulk
Right First Time
Matched to substrate, shade depth and process
Salt, alkali and temperature profile supplied
Tested on your fabric, in our laboratory
Every consignment checked before despatch
Team discussing the project
Previous Project
Chevron Right
Next Project
Chevron Right

More Projects

A finish is hard to judge on a screen.
So we’ll send you one.

Name the material and the finish. We’ll develop a sample and get it to you.

Team working in an office watching at a presentation

Based in Kolkata since 1975.

Stay in the Loop

Stay informed about our latest news, updates by subscribing to our newsletter.

We respect your inbox. No spam, just valuable updates.

5, Ashu Biswas Road, Kolkata: 700019.

Dyechem International is a company registered in India. Water-based coatings, finishes, and textile chemicals are manufactured and supplied by Dyechem International.

© 2026 Dyechem — All rights reserved.
Chevron up

Chemistry that passes the audit, spares the effluent plant, and dyes right the first time.

Water-Based
ZDHC Level 3 Compliant
Cotton Knit
snowboarder woman with a dog

Reactive Dyes

Dyechem has supplied reactive dyes since it was founded in 1975. The portfolio for cotton and viscose runs thirteen series — over a hundred dyes selected for high fixation, low salt loads and compliance paperwork that holds up — each backed by a published recipe, laboratory shade matching and on-site technical support.
Substrate
Cotton and cellulosics
Compliance
ZDHC Level 3 MRSL
Application
Exhaust, pad-batch and printing
Range
Full shade range
Form
Reactive dye powder
Reactive Dyes

Overview

Reactive dyeing has always been unforgiving — shade depends on water quality, salt and alkali dosing, temperature ramp and timing, and one variable out of range turns a batch into a reprocess. What has changed is the price of getting it wrong. A re-dye comes close to doubling the input cost of a batch, effluent is metered and charged, and discharge norms tighten with every revision.
Dyechem was founded in this trade. The company began in 1975 distributing dyes for the major conglomerates, and fifty years later the range it supplies is selected against the fastness and reproducibility standards its own laboratory tests to — high-fixation, low-salt chemistry, azo-free and REACH compliant for export — sold alongside the auxiliaries and technical support needed to run it. One supplier for the complete dyeing operation.
Man in the mountains
Skier in the slope
Reactive Dyes

The Challenge

The chemistry on a dyehouse floor is no longer its own business. Brands now audit their supply chains two tiers down, restricted-substance lists grow with every revision, and export orders move on documentation as much as on shade. A drum that arrives without paperwork that survives an audit is a liability, whatever it costs per kilo.
Skier stand on the slope
Winter kayaking scene
Winter hut
The effluent plant is the other buyer every batch has to satisfy. Every kilogram of salt and every gram of unfixed dye leaves the machine as effluent the dyehouse pays to treat — and when dye strength drifts between lots, or a shade card fails to reproduce on the floor's own water, the reprocess doubles the water, the fuel and the load on the drain.
Reactive Dyes

The Solution

The range is selected against exactly those costs. High-fixation chemistry puts more dye on the fibre and less in the drain, the low-salt series cut the load on the effluent system, and every dye is azo-free with ZDHC Level 3 behind it. Thirteen series map the whole job — M-Brand fixes cold at 30°C, the bifunctional ME, RMB, CN and FGFN ranges work the 60°C middle where fuel is saved, HE runs the hot-exhaust end, VS covers everyday exhaust, pad-batch and printing, H is made for printing, L holds pales level, and the XLRN, XL-RGB and XLRR trichromats plus the knits Speciality set take the count past a hundred dyes.
Womain in blue snowsuit
Deer on ice
Winter scene
Right first time is a recipe problem before it is a machine problem, so every series arrives with its method attached — salt and alkali loadings by shade depth, temperature and time profiles, print-paste ratios, and the full after-treatment sequence that fixes fastness properly. Documented processes cover exhaust on jig and winch, one-bath cold pad-batch with 24-hour fixation, and printing through the H and HE series, with the complete technical tables series by series in the full catalogue.
Professional skier

Reactive Dyes

Reactive Dyes

Performance Results

Shade matching runs through spectrophotometer testing and in-house fastness trials for wash, light and rub. Sample testing is done on the customer's own fabric before bulk, and recipe development is aimed squarely at reducing effluent load, fuel and chemical spend rather than just hitting the shade.
snowboarder woman with a dog
Fixation

More dye on the fibre, less in the effluent

0%
Years of Experience

We pride ourselves on consistency

0
ZDHC Level 3

MRSL v3.1 — documentation that survives the audit

0%

Field technicians attend site for dyeing and printing troubleshooting, and every consignment is checked before despatch under a Right First Time protocol. Fifty years in the trade built one of the leading supplier networks in Eastern India — and it means the answer to most dyehouse problems already exists somewhere in the building.

Reactive Dyes

Final thoughts

Thirteen series and over a hundred dyes selected for what dyeing costs now — high fixation, low salt, azo-free chemistry with ZDHC Level 3 and REACH behind it — each with a published recipe, pre-bulk testing on your own fabric, and technicians who come to site when something goes wrong.

Reactive Dyes

How It Runs

Select the Series
Recipe and Trial
Sample Before Bulk
Right First Time
Matched to substrate, shade depth and process
Salt, alkali and temperature profile supplied
Tested on your fabric, in our laboratory
Every consignment checked before despatch
Team discussing the project
Previous Project
Next Project

More Projects

Chemistry that passes the audit, spares the effluent plant, and dyes right the first time.

Water-Based
ZDHC Level 3 Compliant
Cotton Knit
snowboarder woman with a dog

Reactive Dyes

Dyechem has supplied reactive dyes since it was founded in 1975. The portfolio for cotton and viscose runs thirteen series — over a hundred dyes selected for high fixation, low salt loads and compliance paperwork that holds up — each backed by a published recipe, laboratory shade matching and on-site technical support.
Substrate
Cotton and cellulosics
Compliance
ZDHC Level 3 MRSL
Application
Exhaust, pad-batch and printing
Range
Full shade range
Form
Reactive dye powder
Reactive Dyes

Overview

Reactive dyeing has always been unforgiving — shade depends on water quality, salt and alkali dosing, temperature ramp and timing, and one variable out of range turns a batch into a reprocess. What has changed is the price of getting it wrong. A re-dye comes close to doubling the input cost of a batch, effluent is metered and charged, and discharge norms tighten with every revision.
Dyechem was founded in this trade. The company began in 1975 distributing dyes for the major conglomerates, and fifty years later the range it supplies is selected against the fastness and reproducibility standards its own laboratory tests to — high-fixation, low-salt chemistry, azo-free and REACH compliant for export — sold alongside the auxiliaries and technical support needed to run it. One supplier for the complete dyeing operation.
Man in the mountains
Skier in the slope
Reactive Dyes

The Challenge

The chemistry on a dyehouse floor is no longer its own business. Brands now audit their supply chains two tiers down, restricted-substance lists grow with every revision, and export orders move on documentation as much as on shade. A drum that arrives without paperwork that survives an audit is a liability, whatever it costs per kilo.
Skier stand on the slope
Winter kayaking scene
Winter hut
The effluent plant is the other buyer every batch has to satisfy. Every kilogram of salt and every gram of unfixed dye leaves the machine as effluent the dyehouse pays to treat — and when dye strength drifts between lots, or a shade card fails to reproduce on the floor's own water, the reprocess doubles the water, the fuel and the load on the drain.
Reactive Dyes

The Solution

The range is selected against exactly those costs. High-fixation chemistry puts more dye on the fibre and less in the drain, the low-salt series cut the load on the effluent system, and every dye is azo-free with ZDHC Level 3 behind it. Thirteen series map the whole job — M-Brand fixes cold at 30°C, the bifunctional ME, RMB, CN and FGFN ranges work the 60°C middle where fuel is saved, HE runs the hot-exhaust end, VS covers everyday exhaust, pad-batch and printing, H is made for printing, L holds pales level, and the XLRN, XL-RGB and XLRR trichromats plus the knits Speciality set take the count past a hundred dyes.
Womain in blue snowsuit
Deer on ice
Winter scene
Right first time is a recipe problem before it is a machine problem, so every series arrives with its method attached — salt and alkali loadings by shade depth, temperature and time profiles, print-paste ratios, and the full after-treatment sequence that fixes fastness properly. Documented processes cover exhaust on jig and winch, one-bath cold pad-batch with 24-hour fixation, and printing through the H and HE series, with the complete technical tables series by series in the full catalogue.
Professional skier

Reactive Dyes

Reactive Dyes

Performance Results

Shade matching runs through spectrophotometer testing and in-house fastness trials for wash, light and rub. Sample testing is done on the customer's own fabric before bulk, and recipe development is aimed squarely at reducing effluent load, fuel and chemical spend rather than just hitting the shade.
snowboarder woman with a dog
Fixation

More dye on the fibre, less in the effluent

0%
Years of Experience

We pride ourselves on consistency

0
ZDHC Level 3

MRSL v3.1 — documentation that survives the audit

0%

Field technicians attend site for dyeing and printing troubleshooting, and every consignment is checked before despatch under a Right First Time protocol. Fifty years in the trade built one of the leading supplier networks in Eastern India — and it means the answer to most dyehouse problems already exists somewhere in the building.

Reactive Dyes

Final thoughts

Thirteen series and over a hundred dyes selected for what dyeing costs now — high fixation, low salt, azo-free chemistry with ZDHC Level 3 and REACH behind it — each with a published recipe, pre-bulk testing on your own fabric, and technicians who come to site when something goes wrong.

Reactive Dyes

How It Runs

Select the Series
Recipe and Trial
Sample Before Bulk
Right First Time
Matched to substrate, shade depth and process
Salt, alkali and temperature profile supplied
Tested on your fabric, in our laboratory
Every consignment checked before despatch
Team discussing the project
Previous Project
Next Project

More Projects

Chemistry that passes the audit, spares the effluent plant, and dyes right the first time.

Water-Based
ZDHC Level 3 Compliant
Cotton Knit
snowboarder woman with a dog

Reactive Dyes

Dyechem has supplied reactive dyes since it was founded in 1975. The portfolio for cotton and viscose runs thirteen series — over a hundred dyes selected for high fixation, low salt loads and compliance paperwork that holds up — each backed by a published recipe, laboratory shade matching and on-site technical support.
Substrate
Cotton and cellulosics
Compliance
Application
Exhaust, pad-batch and printing
Range
Full shade range
Form
Reactive dye powder
Reactive Dyes

Overview

Reactive dyeing has always been unforgiving — shade depends on water quality, salt and alkali dosing, temperature ramp and timing, and one variable out of range turns a batch into a reprocess. What has changed is the price of getting it wrong. A re-dye comes close to doubling the input cost of a batch, effluent is metered and charged, and discharge norms tighten with every revision.
Dyechem was founded in this trade. The company began in 1975 distributing dyes for the major conglomerates, and fifty years later the range it supplies is selected against the fastness and reproducibility standards its own laboratory tests to — high-fixation, low-salt chemistry, azo-free and REACH compliant for export — sold alongside the auxiliaries and technical support needed to run it. One supplier for the complete dyeing operation.
Man in the mountains
Skier in the slope
Reactive Dyes

The Challenge

The chemistry on a dyehouse floor is no longer its own business. Brands now audit their supply chains two tiers down, restricted-substance lists grow with every revision, and export orders move on documentation as much as on shade. A drum that arrives without paperwork that survives an audit is a liability, whatever it costs per kilo.
Skier stand on the slope
Winter kayaking scene
Winter hut
The effluent plant is the other buyer every batch has to satisfy. Every kilogram of salt and every gram of unfixed dye leaves the machine as effluent the dyehouse pays to treat — and when dye strength drifts between lots, or a shade card fails to reproduce on the floor's own water, the reprocess doubles the water, the fuel and the load on the drain.
Reactive Dyes

The Solution

The range is selected against exactly those costs. High-fixation chemistry puts more dye on the fibre and less in the drain, the low-salt series cut the load on the effluent system, and every dye is azo-free with ZDHC Level 3 behind it. Thirteen series map the whole job — M-Brand fixes cold at 30°C, the bifunctional ME, RMB, CN and FGFN ranges work the 60°C middle where fuel is saved, HE runs the hot-exhaust end, VS covers everyday exhaust, pad-batch and printing, H is made for printing, L holds pales level, and the XLRN, XL-RGB and XLRR trichromats plus the knits Speciality set take the count past a hundred dyes.
Womain in blue snowsuit
Deer on ice
Winter scene
Right first time is a recipe problem before it is a machine problem, so every series arrives with its method attached — salt and alkali loadings by shade depth, temperature and time profiles, print-paste ratios, and the full after-treatment sequence that fixes fastness properly. Documented processes cover exhaust on jig and winch, one-bath cold pad-batch with 24-hour fixation, and printing through the H and HE series, with the complete technical tables series by series in the full catalogue.
Professional skier

Reactive Dyes

Reactive Dyes

Performance Results

Shade matching runs through spectrophotometer testing and in-house fastness trials for wash, light and rub. Sample testing is done on the customer's own fabric before bulk, and recipe development is aimed squarely at reducing effluent load, fuel and chemical spend rather than just hitting the shade.
snowboarder woman with a dog
Fixation

More dye on the fibre, less in the effluent

0%
Years of Experience

We pride ourselves on consistency

0
ZDHC Level 3

MRSL v3.1 — documentation that survives the audit

0%

Field technicians attend site for dyeing and printing troubleshooting, and every consignment is checked before despatch under a Right First Time protocol. Fifty years in the trade built one of the leading supplier networks in Eastern India — and it means the answer to most dyehouse problems already exists somewhere in the building.

Reactive Dyes

Final thoughts

Thirteen series and over a hundred dyes selected for what dyeing costs now — high fixation, low salt, azo-free chemistry with ZDHC Level 3 and REACH behind it — each with a published recipe, pre-bulk testing on your own fabric, and technicians who come to site when something goes wrong.

Reactive Dyes

How It Runs

Select the Series
Recipe and Trial
Sample Before Bulk
Right First Time
Matched to substrate, shade depth and process
Salt, alkali and temperature profile supplied
Tested on your fabric, in our laboratory
Every consignment checked before despatch
Team discussing the project
Previous Project
Chevron Right
Next Project
Chevron Right

More Projects

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