2-Amino-4-chlorophenol-6-sulfonic acid
- CAS NO.：88-23-3
- Empirical Formula: C6H6ClNO4S
- Molecular Weight: 223.63
- MDL number: MFCD00035768
- EINECS: 201-813-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-10-29 18:21:28
What is 2-Amino-4-chlorophenol-6-sulfonic acid?
The Uses of 2-Amino-4-chlorophenol-6-sulfonic acid
The acid is an important intermediate for dyes. It is used mainly in the manufacture of Diamond Black P 2 B and of acid chrome blue dyes.
Production Methods
2-Amino-4-chlorophenol-6-sulfonic acid obtained from p-chlorophenol by sulfonation and nitration is reduced with iron and hydrochloric acid without being precipitated. After filtering from the iron sludge, the highly alkaline reduction liquor is concentrated by evaporation and decolorized with activated carbon. Upon acidification 3-amino-5-chloro-2-hydroxybenzenesulfonic acid precipitates. Yield 72 %, based on p-chlorophenol.
General Description
Off-white solid.
Air & Water Reactions
May be sensitive to prolonged exposure to air and/or light. Insoluble in water.
Reactivity Profile
2-Amino-4-chlorophenol-6-sulfonic acid may react with strong oxidizing or reducing agents and with mineral acids and bases
Fire Hazard
Flash point data are not available for 2-Amino-4-chlorophenol-6-sulfonic acid, but 2-Amino-4-chlorophenol-6-sulfonic acid is probably combustible.
Properties of 2-Amino-4-chlorophenol-6-sulfonic acid
| Density | 1.790±0.06 g/cm3(Predicted) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| form | powder to crystal |
| pka | -1.53±0.50(Predicted) |
| color | White to Almost white |
| CAS DataBase Reference | 88-23-3(CAS DataBase Reference) |
| EPA Substance Registry System | 2-Hydroxy-5-chlorometanilic acid (88-23-3) |
Safety information for 2-Amino-4-chlorophenol-6-sulfonic acid
| Signal word | Danger |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P405:Store locked up. P403+P233:Store in a well-ventilated place. Keep container tightly closed. P501:Dispose of contents/container to..… |
Computed Descriptors for 2-Amino-4-chlorophenol-6-sulfonic acid
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