Why It Matters
Denim and vat dyers consume reducing agents by the drum and tote to convert insoluble indigo and vat dyes into their soluble leuco form for fiber penetration, and to strip or correct off-shade lots. Sodium hydrosulfite is a recurring high-tonnage consumable and the single highest-demand textile chemical absent from our catalog
Solution Approach
Denim and vat dyers consume reducing agents by the drum and tote to convert insoluble indigo and vat dyes into their soluble leuco form for fiber penetration, and to strip or correct off-shade lots. Sodium hydrosulfite is a recurring high-tonnage consumable and the single highest-demand textile chemical absent from our catalog RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.
Typical Processing Workflow
1
Substrate & Process Assessment
Identify the fiber and process stage (pretreatment, dyeing, finishing) and the performance, hand, and compliance targets.
2
Auxiliary Selection
Match surfactants, wetting and dispersing agents, softeners, fixatives, or pH and sequestering agents to the substrate and bath chemistry.
3
Lab Dip & Dosing
Confirm dose and sequence on a lab dip or pad trial, checking levelness, fastness, hand, and bath stability.
4
Production Validation
Verify reproducibility, fastness, and effluent compliance at scale, and set the recipe and packaging for production.
Recommended Chemistries (4)
Sodium Hydrosulfite (Sodium Dithionite)
CAS 7775-14-6
Strong alkaline reducing agent that converts water-insoluble indigo and vat dyes to their soluble leuco form for uptake, and reductively strips dye for shade correction
Full Details
Thiourea Dioxide (Formamidine Sulfinic Acid)
CAS 1758-73-2
Alkali-activated reducing agent used as a lower-dose, more storage-stable dithionite alternative for vatting and shade stripping
Full Details
Caustic Soda (Sodium Hydroxide) Beads
CAS 1310-73-2
Acids & Salts
Primary alkali for scouring and mercerization
1824 (SODIUM HYDROXIDE SOLUTION) · Class Supplies the strongly alkaline bath that keeps leuco vat dye soluble and activates the reducing agent; already in catalog
Melting Point: 318 °C Boiling Point: > 130 °C at 760 mmHg Density: 1.5 at 20 °C
Full Details
Sodium Sulfide
CAS 1313-82-2
Specialty Additives
pH Adjustment
1849 (SODIUM SULFIDE, HYDRATED, WITH NOT LESS THAN 30% WATER) · Class Reducing agent for the related sulfur-dye class, solubilizing sulfur dyes to their leuco form; already in catalog
Full Details
Related Product Families
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Scouring & Bleaching Chemicals
Alkalis, chelants, surfactants, and peroxide stabilizers for greige goods preparation
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● Available
Mercerization Chemicals
Caustic soda and wetting agents for cotton fiber swelling, luster, and dye affinity improvement
pH AdjustmentWetting
4 chemistries
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