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HomeProduct name list4-Amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt

4-Amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt

4-Amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt Structural

What is 4-Amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt?

Preparation

4-Nitrobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, its product in alkaline conditions again with the diazo 4-(Phenyldiazenyl)benzenamine coupling.

Properties and Applications

dark blue light green. Soluble in water, slightly soluble in ethanol and acetone, hardly soluble in benzene. The strong sulfuric acid for blue-ray green, diluted for blue-ray still green. In an aqueous solution of concentrated sodium hydroxide solution was added to gray light blue.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 3-4 4 4-5 4-5

Safety information for 4-Amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt

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