Dyeing — Process Challenge

Küpen- und Indigo-Farbreduktion sowie Farbabzug

Denim- und Küpenfärber verbrauchen Reduktionsmittel in Trommeln und IBCs, um unlösliches Indigo und Küpenfarbstoffe in ihre lösliche Leuco-Form für die Faserpenetration zu überführen sowie zum Abziehen oder Korrigieren von Farbabweichungen. Natriumdithionit ist ein wiederkehrender Hochtonnagen-Verbrauchsstoff und die nachgefragteste Textilchemikalie, die derzeit nicht in unserem Katalog geführt wird
Updated Jun 2026
Lösungsansatz

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
Schnellansicht
Alle 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
Schnellansicht
Alle Details
Caustic Soda (Sodium Hydroxide) Beads
CAS 1310-73-2
Säuren & Salze
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
Schmelzpunkt:318 °C   Siedepunkt:> 130 °C at 760 mmHg   Dichte:1.5 at 20 °C
Schnellansicht
Alle Details
Sodium Sulfide
CAS 1313-82-2
Spezialadditive
pH-Einstellung
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
Schnellansicht
Alle Details

Benötigen Sie Hilfe bei der Auswahl der richtigen Chemikalie?

Unser Team kann bei der Sortenauswahl, Dosierungsberatung und Multi-Origin-Beschaffung helfen.

Angebot anfordern All Textiles Problems
Angebot anfordern

Katalog auf Deutsch →