Product
Vat Dyes
Vat Dyes give the highest wash and light fastness on cotton, used for workwear, uniforms, towels and denim, supplied as powders and pastes.
- Grades / forms
- Powder & paste
Overview
Vat dyes are insoluble pigments that are temporarily made soluble by reduction with sodium hydrosulphite and caustic soda — the 'vatting' step. In this leuco form they penetrate cotton; they are then oxidised back to the insoluble pigment inside the fibre, where they are trapped permanently.
The result is the best all-round fastness of any cotton dye class, including resistance to chlorine bleach and industrial laundering. That is why vat dyes are used for workwear, military uniforms, hospital textiles, towels and premium shirting. Indigo, the denim dye, is the best-known vat dye. Paste grades suit continuous dyeing and printing.
Applications
- 1Workwear and protective clothing
- 2Military and institutional uniforms
- 3Towels and home textiles
- 4Premium shirting fabrics
- 5Denim (indigo)
- 6Cotton printing
Packing & storage
Packing
- 25 kg fibre drums with PE liner
- Paste in 50 kg HDPE drums
Storage & handling
Keep sealed. Paste grades must be protected from freezing and drying out.
Enquire
Get a price for Vat Dyes
Send grade, quantity and destination port. Price, lead time and documents come back within one business day.
Request a quotation or call +91 97979 77958- Certificate of Analysis with every batch
- SDS in destination format
- Made to your specification
- Private label packing
Questions
Vat Dyes, answered.
Vat dyes have the highest overall fastness on cotton, including resistance to industrial washing, chlorine bleach and sunlight. Workwear and uniforms keep their colour through hundreds of wash cycles.
Vat dyes are reduced with sodium hydrosulphite and caustic soda to their soluble leuco form, dyed onto cotton, and then oxidised back with air or hydrogen peroxide. Soaping at the end develops the final shade and fastness.
Yes. Indigo, the dye used for denim, is a vat dye. It is applied in multiple dips with air oxidation between them, which builds the characteristic ring-dyed effect that gives denim its fading.
Yes. Cosmo Chemistry manufactures and exports Vat Dyes from Surat, Gujarat, India to more than 55 countries, for customers in the industrial & cosmetic dyes industry. Send your grade, quantity and destination port for a quotation within one business day.
Every shipment of Vat Dyes from Cosmo Chemistry includes a batch-specific Certificate of Analysis (COA) and Safety Data Sheet (SDS). Certificate of Origin, third-party pre-shipment inspection and destination-specific regulatory documentation are arranged on request.
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