Name | 3-amino-4-hydroxybenzenesulfonamide |
Synonyms | 2-Aminophenol-4-sulfamide 2-AMINOPHENOL-4-SULFOAMINE 2-AMINOPHENOL-4-SULFONAMIDE 2-Aminophenlo-4-sulfonamide 2-AMINOPHENOL-4-SULFONYL AMIDE 2-Amino-1-phenol-4-sulfonylamdie 3-amino-4-hydroxybenzenesulfonamide 3-AMINO-4-HYDROXYBENZENESULFONAMIDE 3-amino-4-hydroxybenzenesulphonamide |
CAS | 98-32-8 |
EINECS | 202-657-0 |
InChI | InChI=1/C6H8N2O3S/c7-5-3-4(12(8,10)11)1-2-6(5)9/h1-3,9H,7H2,(H2,8,10,11) |
Molecular Formula | C6H8N2O3S |
Molar Mass | 188.20 |
Melting Point | 199-201℃ |
Boling Point | 454.5±55.0 °C(Predicted) |
Appearance | White-like crystal |
Storage Condition | Room Temprature |
MDL | MFCD00035782 |
Physical and Chemical Properties | Traits gray-white or light brown feather-like crystals. melting point 195 ℃ solubility slightly soluble in water, soluble in acid and alkali. |
Use | Used as a reactive dye intermediate |
Hazard Symbols | Xi - Irritant |
Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
gray-white or light-brown feather-like crystals. The melting point was above 195 °c. Slightly soluble in water, soluble in acid and alkali, placed in the air gradually darkened color.
O-nitrochlorobenzene is chlorosulfonated with chlorosulfonic acid to give 4-chlorosulfonyl-2-nitrochlorobenzene, and then aminated to give 4-sulfonamido-2-nitrochlorobenzene, then, the sodium salt of 4-sulfonamido-2-nitrophenol is hydrolyzed into 4-sulfonamido-2-nitrophenol, acidified with hydrochloric acid, and reduced in the presence of iron powder to obtain a finished product.
The diazo component used as a neutral dye.
melting point | 199-201°C |
boiling point | 454.5±55.0 °C(Predicted) |
density | 1.580±0.06 g/cm3(Predicted) |
storage conditions | Keep in dark place,Inert atmosphere,Room temperature |
acidity coefficient (pKa) | 7? -. 0.20(Predicted) |
EPA chemical information | Benzenesulfonamide, 3-amino-4-hydroxy- (98-32-8) |