2-NITROBENZENESULFONIC ACID Chemical Properties

Density 

1.637

pka

-1.43±0.18(Predicted)

form 

powder to crystal

color 

Light orange to Yellow to Green

CAS DataBase Reference

80-82-0(CAS DataBase Reference)

Safety Information

Risk Statements 

34-41

Safety Statements 

26-36/37/39

RIDADR 

2305

HS Code 

2904.99.4700

HazardClass 

8

PackingGroup 

II

2-NITROBENZENESULFONIC ACID Usage And Synthesis

Chemical Properties

Pale yellow crystals. Melting point 70 ℃.

Uses

Used as an intermediates.

Production Methods

2-Chloronitrobenzene is reacted with sodium disulfide at 80 ℃ in aqueous ethanol to give 2,2' -dinitrodiphenyl disulfide, which is isolated and treated with chlorine in mineral acid medium in the presence of nitric acid to produce 2-nitrobenzenesulfonyl chloride by oxidative chlorination. This is hydrolyzed in dilute alkali, and the liquor of the resulting 2-Nitrobenzenesulfonic Acid is reduced with Fe – acid or H2 – catalyst to orthanilic acid [88-21-1], an important diazo component in reactive dyes for cotton.

Synthesis

2-Nitrobenzenesulfonic Acid is synthesized by reacting o-Nitrobenzenesulfonyl chloride with Concentrated ammonia solution in glacial acetic acid

2-NITROBENZENESULFONIC ACID(80-82-0)Related Product Information

• sodium 3-[(1,5-dihydroxy-2-naphthyl)azo]-4-hydroxy-5-nitrobenzenesulphonate
• 2-NITROBENZENESULFONIC ACID
• 2,4,6-TRINITROBENZENESULFONIC ACID
• 2,4-DINITROBENZENESULFONIC ACID
• 2,4-DINITROBENZENESULFONIC ACID SODIUM SALT
• XTT sodium salt
• (R)-(-)-Glycidyl nosylate
• Acid Brown 354
• potassium 4-nitrobenzenesulfonate H2O
• (S)-(+)-Glycidyl nosylate
• 3-Fluoro-4-nitrobenzenesulfonic acid
• Acid Yellow 199
• potassium 2-[[4-[[3-methyl-4-[(phenylsulphonyl)oxy]phenyl]azo]phenyl]amino]-5-nitrobenzenesulphonate
• Pigment Yellow 168
• Pigment Yellow 62
• 3-Fluoro-6-nitrobenzenesulfonic acid
• (S)-(+)-Glycidyl-4-nitrobenzenesulfonate
• sodium 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonate