| Identification | Back Directory | [Name]
4-[[4-[(4-Aminophenyl)azo]-7-sodiosulfo-1-naphthalenyl]azo]-2'-hydroxy[1,1'-azobisnaphthalene]-6,6'-disulfonic acid disodium salt | [CAS]
6661-87-6 | [Synonyms]
C.I.34095
Direct Blue 121
C.I.Direct Blue 121
Diaphtogene Blue IBR
C.I.Direct Blue 121:C.I.34095
4-[[4-[(4-Aminophenyl)azo]-7-sodiosulfo-1-naphthalenyl]azo]-2'-hydroxy[1,1'-azobisnaphthalene]-6,6'-disulfonic acid disodium salt | [MOL File]
6661-87-6.mol |
| Hazard Information | Back Directory | [Preparation]
2-(4-Aminophenylamino)-2-oxoacetic acid diazo, and 8-Aminonaphthalene-2-sulfonic acid coupling, again diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, product to diazo, and 6-Hydroxynaphthalene-2-sulfonic acid coupling, and then 2-(4-Aminophenylamino)-2-oxoacetic acid hydrolysis base. | [Properties and Applications]
red light blue. Soluble in water for blue purple to navy, soluble in ethanol. The strong sulfuric acid for violet, diluted for purple, have red light blue precipitation. The dye solution to join strong hydrochloric acid have blue-ray black precipitation; Add thick sodium hydroxide solution have navy precipitation.
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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
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5
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4-5
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4
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4-5
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