tetrasodium 5-[[4'-[[2,6-diamino-3-[[8-hydroxy-3,6-disulphonato-7-[(4-sulphonato-1-naphthyl)azo]-2-naphthyl]azo]-5-tolyl]azo][1,1'-biphenyl]-4-yl]azo]salicylate Property

EPA Substance Registry System

C.I. Direct Brown 31, tetrasodium salt (2429-81-4)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H350May cause cancer

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P273Avoid release to the environment.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P330Rinse mouth.

P391Collect spillage. Hazardous to the aquatic environment

P501Dispose of contents/container to..…

tetrasodium 5-[[4'-[[2,6-diamino-3-[[8-hydroxy-3,6-disulphonato-7-[(4-sulphonato-1-naphthyl)azo]-2-naphthyl]azo]-5-tolyl]azo][1,1'-biphenyl]-4-yl]azo]salicylate Chemical Properties,Usage,Production

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then and 3-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?diazo, in acid conditions and 4-Methylbenzene-1,3-diamine coupled to a product matches, then hydrolysis benzene sulfonic acid ester base, its products as coupling components again with diazo of 4-Aminonaphthalene-1-sulfonic acid?matches.

Properties and Applications

red light brown. Soluble in water for yellow brown, and adequate soluble in ethanol and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for blue-ray purple or brown and violet black, yellow to red light brown after diluted precipitation; In the nitric acid for brown; In 10% of sodium hydroxide solution for blue-ray red. The dye solution to join strong hydrochloric acid for red orange brown; Add thick sodium hydroxide solution have orange brown precipitation.