DIRECT BLACK 22
- CAS NO.：6473-13-8
- Empirical Formula: C44H32N13Na3O11S3
- Molecular Weight: 1083.97
- MDL number: MFCD00078136
- EINECS: 229-326-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-12-31 14:38:37
What is DIRECT BLACK 22?
Chemical properties
black powder
The Uses of DIRECT BLACK 22
Direct Black 22 is a polyimidazolium salt and an organic dye used in the textile industry. Direct Black 22 is considered a water pollutant, and is removed from wastewater by degradation.
Preparation
5-Amino-2-(4-aminophenylamino)benzenesulfonic acid double nitriding, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? (2 Moore) coupled, then double nitriding, and Benzene-1,3-diamine (2 Moore) coupled.
Properties and Applications
green and black. Blue gray powder. Soluble in water for violet black. The strong sulfuric acid for violet black, dilute black light after brown precipitation; In nitric acid solution for the red light brown in, precipitation. The dye solution to join strong hydrochloric acid have brown light black precipitation; Add thick sodium hydroxide solution for dark blue light red. Mainly used for cotton, viscose, wool/stick,nylon/rayon blended fabric dyeing and printing, also used in leather and paper dyeing.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 5 | 4 | 4 | 3 | 3 | ||
| AATCC | 5 | 4-5 | 5-6 | 3 | 3 | ||
Properties of DIRECT BLACK 22
| form | Powder |
| color | Black |
| CAS DataBase Reference | 6473-13-8 |
| EPA Substance Registry System | C.I. Direct Black 22 (6473-13-8) |
Safety information for DIRECT BLACK 22
Computed Descriptors for DIRECT BLACK 22
DIRECT BLACK 22 manufacturer
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