BISMARCK BROWN Y Property

Melting point:

222 C (dec.)

Boiling point:

696.4±55.0 °C(Predicted)

Density 

1.42±0.1 g/cm3(Predicted)

vapor pressure 

0Pa at 25℃

pka

3.34±0.10(Predicted)

Water Solubility 

18μg/L at 20℃

LogP

2.26 at 25℃

EPA Substance Registry System

1,3-Benzenediamine, 4,4'-[1,3-phenylenebis(azo)]bis- (1052-38-6)

Safety

Hazard Codes 

Xn

Risk Statements 

20/21/22-36/37/38

Safety Statements 

22-24/25-36-26

WGK Germany 

3

Hazard and Precautionary Statements (GHS)

BISMARCK BROWN Y Chemical Properties,Usage,Production

Definition

ChEBI: A bis(azo) compound that is 1,1'-(1,3-phenylene)bis(diazene) in which both azene hydrogens are replaced by 2,4-diaminophenyl groups. A metachromatic dye which stains acid mucins yellow. It is also a constituent of Papanicolaou's EA solutions, used for cerv cal, and other smears. Its dihydrochloride salt is also a biological dye known as Bismark brown Y.

Preparation

2 Moore’s Nitrous acid?treatment 3 Moore’s Benzene-1,3-diamine dihydrochloride (this product may be based on the double azo dyes as the main component of the mixture, and commodity dye is usually composed of dihydrochloride composition), and made free base.

Flammability and Explosibility

Non flammable

Properties and Applications

yellow brown. Soluble in ethanol, acetone and benzene. In concentrated sulfuric acid for brown, dilution after red brown; In concentrated nitric acid for orange solution, to yellow. Dye aqueous solution to join hydrochloric acid don’t change color; Add 10% sodium hydroxide solution have orange precipitation.