2,4-DINITROBENZENESULFONIC ACID manufacturers
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| | 2,4-DINITROBENZENESULFONIC ACID Basic information |
| Product Name: | 2,4-DINITROBENZENESULFONIC ACID | | Synonyms: | 2,4-dinitro-benzenesulfonicaci;Benzenesulfonic acid, 2,4-dinitro-;Kyselina 2,4-dinitrobenzensulfonova;kyselina2,4-dinitrobenzensulfonova;2,4-DINITROBENZENESULFONIC ACID;2,4-DINITROBENZENESULFONIC ACID, HYDRATE;2,4-DINITROBENZOSULFONIC ACID;2,4-Dinitrobenzenesulfonic acid dihydrate,98% | | CAS: | 89-02-1 | | MF: | C6H4N2O7S | | MW: | 248.17 | | EINECS: | 201-876-9 | | Product Categories: | Organic Building Blocks;Sulfonic/Sulfinic Acids;Intermediates of Dyes and Pigments;Sulfur Compounds | | Mol File: | 89-02-1.mol |  |
| | 2,4-DINITROBENZENESULFONIC ACID Chemical Properties |
| Melting point | 95-98 °C(lit.) | | density | 1.745 (estimate) | | refractive index | 1.6430 (estimate) | | storage temp. | Storage temp. 2-8°C | | form | solid | | pka | -2.21±0.50(Predicted) | | Appearance | White to off-white Solid | | Water Solubility | Soluble in methanol (2.5% w/v), slightly soluble in water. | | CAS DataBase Reference | 89-02-1(CAS DataBase Reference) | | EPA Substance Registry System | Benzenesulfonic acid, 2,4-dinitro- (89-02-1) |
| Hazard Codes | C | | Risk Statements | 34 | | Safety Statements | 26-36/37/39-45 | | RIDADR | UN 1759 8/PG 2 | | WGK Germany | 3 | | RTECS | DB6500000 | | TSCA | TSCA listed | | HazardClass | 8 | | PackingGroup | III |
| | 2,4-DINITROBENZENESULFONIC ACID Usage And Synthesis |
| Chemical Properties | YELLOW TO YELLOW-BROWN CRYSTALLINE POWDER | | Uses | Reduction of 2,4-Dinitrobenzenesulfonic Acid gives the colorant intermediate 1,3-diaminobenzene-4-sulfonic acid [88-63-1] as an alternative to the sulfonation of m-phenylenediamine. | | Production Methods | 2,4-Dinitrochlorobenzene is warmed with aqueous sodium sulfite to give an 80 % yield of the sodium salt of 2,4-Dinitrobenzenesulfonic Acid [885-62-1] as yellow needles after salting out. The lower reactivity of 2- and 4- chloronitrobenzene requires much higher temperature for this nucleophilic sulfitation, with too many side reactions to be practicable. | | Definition | ChEBI: The arenesulfonic acid that is benzenesulfonic acid with two nitro substituents in the 2- and 4-positions. |
| | 2,4-DINITROBENZENESULFONIC ACID Preparation Products And Raw materials |
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