| Identification | Back Directory | [Name]
6,6'-[(3,3'-Dimethyl-1,1'-biphenyl-4,4'-diyl)bis(azo)]bis[4-amino-5-hydroxy-1-naphthalenesulfonic acid]disodium salt | [CAS]
2609-87-2 | [Synonyms]
C.I.23830
Direct Blue 231
C.I.Direct Blue 231
C.I.Direct Blue 231:C.I.23830
6,6'-[(3,3'-Dimethyl-1,1'-biphenyl-4,4'-diyl)bis(azo)]bis[4-amino-5-hydroxy-1-naphthalenesulfonic acid]disodium salt | [MOL File]
2609-87-2.mol |
| Hazard Information | Back Directory | [Preparation]
3,3′-Dimethylbenzidine double nitriding, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled | [Properties and Applications]
olourful green light blue. Soluble in water for violet blue, soluble in ethanol for blue: the strong sulfuric acid for blue, purple for blu-ray diluted. The dye solution to join strong hydrochloric acid have dark purple precipitation; Add thick sodium hydroxide solution the same color
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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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4-5
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4
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1
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1-2
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2
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