| Identification | Back Directory | [Name]
disodium 4-amino-3-[[4'-[(2-amino-6-sulphonatonaphthyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-1-sulphonate | [CAS]
6598-56-7 | [Synonyms]
C.I.23505
Direct red 67
C.I.Direct Red 67
C.I.Direct Red 67:C.I.23505
disodium 4-amino-3-[[4'-[(2-amino-6-sulphonatonaphthyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-1-sulphonate
4-Amino-3-[[4'-[(2-amino-6-sulfo-1-naphtyl)azo]-3,3'-dimethyl-1,1'-biphenyl-4-yl]azo]-1-naphthalenesulfonic acid disodium salt | [EINECS(EC#)]
229-537-0 | [Molecular Formula]
C34H26N6Na2O6S2 | [MOL File]
6598-56-7.mol | [Molecular Weight]
724.716 |
| Hazard Information | Back Directory | [Preparation]
3,3′-Dimethylbenzidine double nitriding, respectively with the 4-Hydroxynaphthalene-1-sulfonic acid and 6-Aminonaphthalene-2-sulfonic acid coupling. | [Properties and Applications]
colourful red yellow light. Soluble in water for yellow light red, slightly soluble in ethanol in red. The strong sulfuric acid for violet blue, purple and blue after diluted precipitation. The dye solution to join strong hydrochloric acid for violet blue; Add thick more yellow sodium hydroxide solution.
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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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2
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5
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1-2
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3
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