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HomeProduct name listSolvent Red 31

Solvent Red 31

Solvent Red 31 Structural

What is Solvent Red 31?

Preparation

4-(Phenyldiazenyl)benzenamine diazotization and 7-Hydroxynaphthalene-1,3,6-trisulfonic acid coupling, and then translate into dicyclohexyl amine salt.

Properties and Applications

red. Dark red powder. Insoluble in water, slightly soluble in ethanol for magenta. In concentrated sulfuric acid to purple, dilution after pink. Dye aqueous solution to join concentrated hydrochloric acid to red; Add thick sodium hydroxide solution for brown. Used for plastic, grease, printing ink, paint color.

Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Good 120(1hr) Well Poor Poor

Properties of Solvent Red 31

EPA Substance Registry System 1,3,6-Naphthalenetrisulfonic acid, 7-hydroxy-8-[[4-(phenylazo)phenyl]azo]-, compd. with N-cyclohexylcyclohexanamine (6226-90-0)

Safety information for Solvent Red 31

Computed Descriptors for Solvent Red 31

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