Synthetic Indigo (Indigo Pure)
CAS Number: 482-89-3
Synthetic indigo is the industrially manufactured form of the classic blue vat dye, produced via the Heumann-Pfleger synthesis from aniline and chloroacetic acid. It is the dominant blue colorant for denim fabric worldwide, applied by vat dyeing to impart the characteristic fading behavior that defines denim aesthetics. Chemzip supplies synthetic indigo in granular and powder forms to denim mills, yarn dyers, and textile chemical distributors.
Technical Specifications
| appearance | Dark blue granules or powder |
| moisture (%) | ≤1.5 |
| indigo content (%) | ≥94.0 |
| insoluble matter (%) | ≤0.5 |
Applications
- Denim fabric and yarn vat dyeing (ring spinning and open-end)
- Knit indigo dyeing for casual wear
- Traditional craft dyeing and handloom textiles
- Art supply and fabric paint pigment
- Historical dye reproduction for museum textiles
Key Features
- High indigo content ≥94% delivers strong, consistent blue on denim
- Granular form minimizes dust during handling in continuous dyeing machines
- Characteristic ring-dyeing effect creates authentic vintage fade aesthetics
- Available in 25 kg paper bags and 500 kg flexible IBC containers
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CAS Number
482-89-3
Category
Dye / Pigment IntermediatesAvailability
In StockSample
Dispatched within 5 days