98%
400G
Door-to-door
| Appearance | Can be dissolved in water is dark purple, can be easily dissolved in ethanol is red light purple. Colored delphinide blue in concentrated sulfuric acid and purple when diluted. Its aqueous solution experiences a purple precipitate from concentrated hydrochloric acid; Resistance to concentrated sodium hydroxide as wine red. | UN | 0.0 |
| HS | 32041400 | DG Class | 0.0 |
| Synonyms | Direct Copper Blue BR; C.I. Direct blue 168; Kayaku Direct Copper Blue 2B; Japanol Copper Blue 2B; Direct Blue 168; Disodium 3-[[4'-[[6-Amino-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]-3,3'-Dimethoxy[1,1'-Biphenyl]-4-Yl]Azo]-4-Hydroxynaphthalene-1-Sulphonate; Mitsui Direct Copper Blue 2B; C.1.Direct Blue 168; Copper Blue 2B | ||