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Direct Red 83
Direct Red 83
/ CAS : 15418-16-3| Appearance | Soluble in water, the aqueous solution is magenta, and it is jujube red when added with concentrated hydrochloric acid; Add concentrated sodium hydroxide solution to produce wine red precipitation. Very soluble in ethanol, light purple. It is purple black in concentrated sulfuric acid and turns orange to reddish brown after dilution. | Formula | C33H20N6Na4O17S4 | Molecular Mass | 992.76100 |
| HS | 32041400 | UN | 0 | DG Class | 0 |
| Synonyms | Dicopper,Tetrasodium,4-Oxido-7-[[5-Oxido-6-[(2-Oxido-5-Sulfonatophenyl)Diazenyl]-7-Sulfonatonaphthalen-2-Yl]Carbamoylamino]-3-[(2-Oxido-5-Sulfonatophenyl)Diazenyl]Naphthalene-2-Sulfonate; C.I. Direct Red 83; Tetrasodium [Mu-[[7,7'-(Carbonyldiimino)Bis[4-Hydroxy-3-[(2-Hydroxy-5-Sulphophenyl)Azo]Naphthalene-2-Sulphonato]](8-)]]Dicuprate(4-); Direct Red 220; Cuprate(4-), .Mu.-7,7-(Carbonyldiimino)Bis4-(Hydroxy-.Kappa.O)-3-2-(Hydroxy-.Kappa.O)-5-Sulfophenylazo-.Kappa.N1-2-Naphthalenesulfonato(8-)Di-, Tetrasodium; C.I.Directred83; Cprate(4-), [ Mu -[[7,7'-(Carbonyldiimino)Bis[4-Hydroxy-3-[(2-Hydroxy-5-Sulfop; Blend Rubzne D-Rll; Rubine 3Bl; Chrome Leather Violet 2Rll | ||||
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