| Identification | Back Directory | [Name]
Chromate(3-),bis[4-(hydroxy-kO)-3-[[2- (hydroxy-kO)-1-naphthalenyl]azo-kN1]-5- nitrobenzenesulfonato(3-)]-,disodium hydrogen | [CAS]
6370-16-7 | [Synonyms]
Acid Black 43
C.I.Acid Black 43:C.I.15691
Chromate(3-),bis[4-(hydroxy-kO)-3-[[2- (hydroxy-kO)-1-naphthalenyl]azo-kN1]-5- nitrobenzenesulfonato(3-)]-,disodium hydrogen | [Molecular Formula]
C32H17CrN6NaO14S2- | [MOL File]
6370-16-7.mol | [Molecular Weight]
848.62 |
| Hazard Information | Back Directory | [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.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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Fading
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Stain
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Fading
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Stain
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ISO
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7-8
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3-4
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3-4
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4-5
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3
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4-5
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