| Identification | Back Directory | [Name]
2,6-DINITROTOLUENE-4-SULFONIC ACID | [CAS]
88-90-4 | [Synonyms]
3,5-DINITRO-P-TOLUENESULFONIC ACID
2,6-DINITROTOLUENE-4-SULFONIC ACID
2,6-dinitro-p-toluenesulphonic acid
4-methyl-3,5-dinitro-benzenesulfonicaci
3,5-DINITRO-4-METHYLBENZENE SULFONIC ACID
3,5-Dinitro-4-methylbenzenesulfonic acid
3,5-Dinitro-p-toluenesulfonic acid
4-Methyl-3,5-dinitrobenzenesulfonic acid | [EINECS(EC#)]
201-866-4 | [Molecular Formula]
C7H6N2O7S | [MDL Number]
MFCD00071768 | [MOL File]
88-90-4.mol | [Molecular Weight]
262.2 |
| Hazard Information | Back Directory | [Physical properties]
2,6-Dinitrotoluene-4-sulfonic Acid, crystallizes as a hydrate in the form of pale yellow crystals, which soften at 110 ℃, dehydrate at 140 ℃, and melt at 165 ℃.
| [Uses]
Reduction of 2,6-Dinitrotoluene-4-sulfonic Acid with sulfide gives 2- amino-6-nitrotoluene-4-sulfonic acid, and reduction with iron – acid gives 2,6-diaminotoluene-4-sulfonic acid [98-25-9]. 2,6-Dinitrotoluene-4-sulfonyl chloride [80198-19-2] is obtained from 2,6-Dinitrotoluene-4-sulfonic Acid by treatment with thionyl chloride. Reaction of this sulfonyl chloride with an alkylamine followed by hydrogenation leads to a readily accessible series of symmetrical diaminotoluenesulfonamides.
| [Production Methods]
2-Nitrotoluene is sulfonated to form 2-nitrotoluene-4-sulfonic acid; the reaction mixture is diluted with 90 % sulfuric acid, and sodium nitrate is added over 6 h at 80 ℃. After a further 1 h at this temperature the reaction mass is poured into water and the sodium salt of the product is salted out by addition of sodium sulfate. After being washed acid-free with brine, the yield of 2,6-Dinitrotoluene-4-sulfonic Acid is ca. 80 %.
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