2-CHLORO-5-NITROBENZENESULFONIC ACID
- CAS NO.：96-73-1
- Empirical Formula: C6H4ClNO5S
- Molecular Weight: 237.62
- MDL number: MFCD00065336
- EINECS: 202-528-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-08-15 19:00:21
What is 2-CHLORO-5-NITROBENZENESULFONIC ACID?
Chemical properties
Tan Solid
Physical properties
2-Chloro-5-nitrobenzenesulfonic Acid, crystallizes as the dihydrate from water (mp 169 ℃, decomp.). The compound undergoes explosive decomposition when heated above 200 ℃, and all reactions, including its production, must be undertaken with great caution.
The Uses of 2-CHLORO-5-NITROBENZENESULFONIC ACID
Amination of 2-Chloro-5-nitrobenzenesulfonic Acid gives 4-nitroaniline- 2-sulfonic acid [96-75-3], which is used as a diazo component or reduced to the important colorant intermediate 2,5-diaminobenzenesulfonic acid [88-45-9]. Chlorination of 2-Chloro-5-nitrobenzenesulfonic Acid in aqueous solution is a more facile route to 2,6- dichloro-4-nitroaniline than chlorination of 4-nitroaniline.
Production Methods
4-Chloronitrobenzene is sulfonated with 65 % oleum at 115 ℃; special precaution must be taken to control temperature. Work-up is by quenching and isolation of the sodium salt after it has been salted out.
Properties of 2-CHLORO-5-NITROBENZENESULFONIC ACID
| Melting point: | >300°C |
| Density | 1.651 (estimate) |
| refractive index | 1.6000 (estimate) |
| storage temp. | Refrigerator |
| form | solid |
| pka | -1.73±0.33(Predicted) |
| CAS DataBase Reference | 96-73-1(CAS DataBase Reference) |
| EPA Substance Registry System | Benzenesulfonic acid, 2-chloro-5-nitro- (96-73-1) |
Safety information for 2-CHLORO-5-NITROBENZENESULFONIC ACID
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H317:Sensitisation, Skin H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 2-CHLORO-5-NITROBENZENESULFONIC ACID
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