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Acid Red 73
Acid Red 73
/ CAS : 5413-75-2| Appearance | Yellow light red powder. It is soluble in water as a red solution, soluble in alcohol and fibrinolysin, insoluble in acetone and insoluble in other organic solvents. It is reddish purple in the presence of concentrated sulfuric acid and generates reddish brown precipitate after dilution; When encountering concentrated nitric acid, it turns blue and turns olive brown to orange. Its aqueous solution is added with concentrated hydrochloric acid to form dark reddish brown precipitate, and sodium hydroxide solution is added to form dark brown precipitate. When dyeing, the color of copper and iron ions is dark. Good discharge. | Formula | C22H14N4Na2O7S2 | Molecular Mass | 556.47900 |
| HS | 32041200 | UN | 0 | DG Class | 0 |
| Synonyms | C.I.Acidred73; Woodstain Scarlet; Brilliant Crocein; Acidscarletgr; Croceineacidred; Crocein Scarlet 3B; Crocein Scarlet; Croceinscralet; Solvent Red 69; Brilliant Crocein Moo,7-Hydroxy-8-(4-Phenylazophenylazo)-1,3-Naphthalenedisulfonic Acid Disodium Salt, Acid Red 73, Brilliant Crocein Scarlet Moo, Crocein Scarlet Moo; 7-Hydroxy-8-(4-Phenylazophenylazo)-1,3-Naphthalenedisulfonic Acid Disodium Salt; Acid Red 73 0; Ci No 27290; Ci 27290 | ||||
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