Dyeing — Process Challenge

바트·인디고 염료 환원 및 색상 제거

데님 및 바트 염색업체는 불용성 인디고와 바트 염료를 섬유 침투용 가용성 루코 형태로 전환하고, 오염색 로트의 제거 또는 보정을 위해 드럼 및 토트 단위로 환원제를 소비합니다. 차아황산 나트륨(Sodium Hydrosulfite)은 반복적인 고톤수 소모품이며 당사 카탈로그에 없는 단일 최고 수요 섬유 화학품입니다
Updated Jun 2026
솔루션 접근법

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
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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
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Caustic Soda (Sodium Hydroxide) Beads
CAS 1310-73-2
산 및 염
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
융점:318 °C   끓는점:> 130 °C at 760 mmHg   밀도:1.5 at 20 °C
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Sodium Sulfide
CAS 1313-82-2
특수 첨가제
pH 조절
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
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