Solvent Red 31
- CAS NO.：6226-90-0
- Empirical Formula: C34H39N5O10S3
- Molecular Weight: 773.89596
- EINECS: 228-322-9
- SAFETY DATA SHEET (SDS)
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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