Direct Brown 44 Property

EPA Substance Registry System

Benzenesulfonic acid, 4,4'-[1,3-phenylenebis[azo(4,6-diamino-3,1-phenylene)azo]]bis-, disodium salt (6252-62-6)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

Direct Brown 44 Chemical Properties,Usage,Production

Preparation

2 moles of nitrous acid treatment with 3 moles of ?Benzene-1,3-diamine?dihydrochloride (This product may be based on the disazo dye mixture as the main ingredient, and commercial dyes are usually composed by a dihydrochloride). And its product ??(C.I. Basic Brown 1, C.I. 21000)?as coupling component and diazotized 4-Aminobenzenesulfonic acid (2 mol) coupling

Properties and Applications

brown. Soluble in water for brown, soluble in ethanol and acetone. The strong sulfuric acid for palm to black, diluted for orange brown, there is a fine precipitation. The dye solution to join 10% sodium hydroxide solution more red light. Apply to the cellulose fibre paper printing and dyeing and color.