BENZOAZURINE Chemical Properties

Stability:

Stable. Incompatible with strong oxidizing agents.

CAS DataBase Reference

2429-71-2

EPA Substance Registry System

C.I. Direct Blue 8, disodium salt (2429-71-2)

BENZOAZURINE Usage And Synthesis

Chemical Properties

solid

Uses

As a dye: Colour Index vol. 2 (3rd ed., 1971) p 2223. As analytical reagent in detection of Mg.

Preparation

3,3′-Dimethoxylbenzidine ?double nitride, and 4-Hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled.

General Description

Bluish-black powder.

Air & Water Reactions

Azo dyes can be explosive when suspended in air at specific concentrations. Slightly soluble in water.

Reactivity Profile

BENZOAZURINE is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.

Fire Hazard

Flash point data are not available for BENZOAZURINE, but BENZOAZURINE is probably combustible.

Properties and Applications

blue. Soluble in water for purple red to blue, soluble in soluble fiber element, soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for blue, blue for red after diluted. The dye solution to join strong hydrochloric acid for purple, have precipitation; Add thick sodium hydroxide solution for red light purple.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	4-5	2	1	1-2		1-2
AATCC	5	1	1-2	1		1

BENZOAZURINE(2429-71-2)Related Product Information

• 3-[[4-[[4-[(1-Hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-6-sodiosulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]naphthalene-1,5-disulfonic acid disodium salt
• DIRECT BLUE 76
• DIRECT BLUE 78
• tetrasodium 2-[[4-[[4-[[1-hydroxy-6-(phenylamino)-3-sulphonato-2-naphthyl]azo]-7-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]benzene-1,4-disulphonate
• NIAGARA BLUE 5B,NIAGARA BLUE 4B
• NIAGARA BLUE RW
• NIAGARA BLUE 2B
• NIAGARA BLUE G
• NIAGARA BLUE 3B
• NIAGARA BLUE 6B
• 1-NAPHTHOL-4-SULFONIC ACID SODIUM SALT
• 3-PHENYLPHENOL
• 4-HYDROXYBENZENESULFONIC ACID SODIUM SALT HYDRATE
• 2,2'-DIHYDROXYAZOBENZENE
• 1-Naphthol-4-sulfonic acid
• 4-HYDROXYBENZENESULFONIC ACID SODIUM SALT DIHYDRATE
• BENZOAZURINE
• ACID RED 4