PRODUCT Properties
| form | Powder |
| color | Black |
| CAS DataBase Reference | 6473-13-8 |
| EPA Substance Registry System | C.I. Direct Black 22 (6473-13-8) |
Description and Uses
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.
Safety
| Symbol(GHS) | ![]() GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H320 |
| Precautionary statements | P264-P305+P351+P338-P337+P313-P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362 |





![2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt](https://img.chemicalbook.com/CAS/GIF/6428-38-2.gif)