| Identification | More | [Name]
2-NITROBENZENESULFONIC ACID | [CAS]
80-82-0 | [Synonyms]
2-NITROBENZENESULFONATE ACID
2-NITROBENZENESULFONIC ACID
O-NITROBENZENESULFONIC ACID
2-nitrobenzenesulphonic acid
2-NITROBENZENESULFONIC ACID HYDRATE | [EINECS(EC#)]
201-311-6 | [Molecular Formula]
C6H5NO5S | [MDL Number]
MFCD00053617 | [Molecular Weight]
203.17 | [MOL File]
80-82-0.mol |
| Safety Data | Back Directory | [Risk Statements ]
R34:Causes burns.
R41:Risk of serious damage to eyes. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [RIDADR ]
2305 | [HS Code ]
2904.99.4700 | [HazardClass ]
8 | [PackingGroup ]
II |
| Hazard Information | Back Directory | [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 |
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