| Identification | Back Directory | [Name]
tetrasodium 5,5'-[vinylenebis[(3-sulphonato-4,1-phenylene)azo]]bis(salicylate) | [CAS]
6459-82-1 | [Synonyms]
C.I.24910
Direct Yellow 72
C.I.Direct Yellow 72
C.I.Direct Yellow 72:C.I.24910
tetrasodium 5,5'-[vinylenebis[(3-sulphonato-4,1-phenylene)azo]]bis(salicylate)
5,5'-[Ethene-1,2-diylbis[(3-sodiosulfo-4,1-phenylene)azo]]bis[2-hydroxybenzoic acid sodium] salt | [EINECS(EC#)]
229-268-9 | [Molecular Formula]
C28H16N4Na4O12S2 | [MOL File]
6459-82-1.mol | [Molecular Weight]
756.535 |
| Hazard Information | Back Directory | [Preparation]
1,2-Bis(4-amino-2-sulfophenyl)ethene double nitriding, and 2-Hydroxybenzoic acid (2 Moore) coupled. | [Properties and Applications]
dark red light yellow to orange. Soluble in water for yellow orange, slightly soluble in alcohol. The strong sulfuric acid to red light purple, dilute for dark brown or black after; In nitric acid solution for light yellow, with gray precipitation. The dye solution to join strong hydrochloric acid for dark brown, have precipitation; Add thick sodium hydroxide solution in red.
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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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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5-6
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