6-AMINOTOLUENE-3-SULFONIC ACID
2-Aminotoluene-5-sulfonic acid
CAS: 98-33-9
Molecular Formula: C7H9NO3S
6-AMINOTOLUENE-3-SULFONIC ACID - Names and Identifiers
| Name | 2-Aminotoluene-5-sulfonic acid |
| Synonyms | OTS 2-TOLUIDINE-5-SULFONIC ACID o-Toluidine-4-sulfphonicacid 4-AMINO-M-TOLUENESULFONIC ACID 2-AMINOTOLUENE-5-SULFONIC ACID 6-AMINOTOLUENE-3-SULFONIC ACID 2-Aminotoluene-5-sulfonic acid 4-amino-3-methyl-benzenesulfonicaci 4-AMINO-3-METHYLBENZENESULFONIC ACID |
| CAS | 98-33-9 |
| EINECS | 202-658-6 |
| InChI | InChI=1/C7H9NO3S/c1-5-4-6(12(9,10)11)2-3-7(5)8/h2-4H,8H2,1H3,(H,9,10,11)/p-1 |
6-AMINOTOLUENE-3-SULFONIC ACID - Physico-chemical Properties
| Molecular Formula | C7H9NO3S |
| Molar Mass | 187.22 |
| Density | 1.3553 (rough estimate) |
| Melting Point | 290℃ |
| Water Solubility | 5g/L(20 ºC) |
| Appearance | Solid |
| Storage Condition | Room Temprature |
| Refractive Index | 1.6100 (estimate) |
| MDL | MFCD00025198 |
| Physical and Chemical Properties | Chemical properties colorless flake crystals. Contains 1 molecule of crystal water, loses crystal water at 120 ℃, does not melt at 330-350 ℃, but turns black and decomposes. Soluble in water. |
| Use | Used as a dye intermediate |
6-AMINOTOLUENE-3-SULFONIC ACID - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R45 - May cause cancer R34 - Causes burns |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. 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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3261 |
6-AMINOTOLUENE-3-SULFONIC ACID - Upstream Downstream Industry
6-AMINOTOLUENE-3-SULFONIC ACID - Nature
| acidity coefficient (pKa) | pK1: 3.125 (25°C) |
| water solubility | 5g/L(20 °C) |
| EPA chemical information | Benzenesulfonic acid, 4-amino-3-methyl- (98-33-9) |
Last Update：2024-04-09 01:59:49
6-AMINOTOLUENE-3-SULFONIC ACID - Uses and synthesis methods
morphology
White to yellowish to yellowish brown viscous oil to semi-solid.
production method
It is prepared by sulfonation of o-toluidine. The sulfonation reaction was carried out in the solvent diphenyl sulfone, heated to 150-185°C, and the reaction was intense. At the end of the reaction, the product is dissolved with lye, the solid diphenyl sulfone is removed, and the finished product is obtained by distillation, water washing, filtration, acidification and other operations, and the yield is 98%.
Last Update：2024-04-09 21:54:55
6-AMINOTOLUENE-3-SULFONIC ACID - Security information
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
Last Update：2024-04-09 20:48:19
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View History
Raw Materials for 6-AMINOTOLUENE-3-SULFONIC ACID
Downstream Products for 6-AMINOTOLUENE-3-SULFONIC ACID
trisodium 4-hydroxy-7-[[[[5-hydroxy-7-sulphonato-6-[(o-tolyl)azo]-2-naphthyl]amino]carbonyl]amino]-3-[(2-methyl-4-sulphonatophenyl)azo]naphthalene-2-sulphonate
disodium 7-(benzoylamino)-4-hydroxy-3-[[3-methyl-4-[(2-methyl-4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate
disodium hydrogen bis[4-[[2,6-dihydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]phenyl]azo]-3- methylbenzenesulphonato(3-)]chromate(3-)
disodium 7-(benzoylamino)-4-hydroxy-3-[[3-methyl-4-[(2-methyl-4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate
disodium hydrogen bis[4-[[2,6-dihydroxy-3-[(2-hydroxy-3,5-dinitrophenyl)azo]phenyl]azo]-3- methylbenzenesulphonato(3-)]chromate(3-)