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Chromate(3-),bis[4-(hydroxy-kO)-3-[[2- (hydroxy-kO)-1-naphthalenyl]azo-kN1]-5- nitrobenzenesulfonato(3-)]-,disodium hydrogen

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Chromate(3-),bis[4-(hydroxy-kO)-3-[[2- (hydroxy-kO)-1-naphthalenyl]azo-kN1]-5- nitrobenzenesulfonato(3-)]-,disodium hydrogen Basic information

Product Name:
Chromate(3-),bis[4-(hydroxy-kO)-3-[[2- (hydroxy-kO)-1-naphthalenyl]azo-kN1]-5- nitrobenzenesulfonato(3-)]-,disodium hydrogen
Synonyms:
  • Chromate(3-),bis[4-(hydroxy-kO)-3-[[2- (hydroxy-kO)-1-naphthalenyl]azo-kN1]-5- nitrobenzenesulfonato(3-)]-,disodium hydrogen
  • Acid Black 43
  • C.I.Acid Black 43:C.I.15691
CAS:
6370-16-7
MF:
C32H17CrN6NaO14S2-
MW:
848.62
Mol File:
6370-16-7.mol
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Chromate(3-),bis[4-(hydroxy-kO)-3-[[2- (hydroxy-kO)-1-naphthalenyl]azo-kN1]-5- nitrobenzenesulfonato(3-)]-,disodium hydrogen Usage And Synthesis

Preparation

3-Amino-4-hydroxy-5-nitrobenzenesulfonic acid diazo, and Naphthalen-2-ol coupling, and then with aqueous acid chromium heating together, and in 100 ℃ keep 3 ~ 5 hours, make all of its formation chromium complex (1 to 2 Moore single atoms chromium azo dyes).

Properties and Applications

red light black. Soluble in water for black purple. The strong sulfuric acid for green light black; After diluted for purple brown precipitation. In water solution to join hydrochloric acid is palm orange; With strong sodium hydroxide solution for wine red to deep red wine.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 7-8 3-4 3-4 4-5 3 4-5

Chromate(3-),bis[4-(hydroxy-kO)-3-[[2- (hydroxy-kO)-1-naphthalenyl]azo-kN1]-5- nitrobenzenesulfonato(3-)]-,disodium hydrogenSupplier

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Chromate(3-),bis[4-(hydroxy-kO)-3-[[2- (hydroxy-kO)-1-naphthalenyl]azo-kN1]-5- nitrobenzenesulfonato(3-)]-,disodium hydrogen(6370-16-7)Related Product Information