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| | 2,3-DIMETHYL-2,3-DINITROBUTANE Basic information |
| Product Name: | 2,3-DIMETHYL-2,3-DINITROBUTANE | | Synonyms: | TIMTEC-BB SBB008538;Dimethyl-2,3-dinitrobutane;DMDNB;2,3-Dimethyl-2,3-dinitrobutane (DMNB);2,3-DIMETHYL-2,3-DINITROBUTANE 98%;2,3-DIMETHYL-2,3-DINITROBUTANE;2,3-DIMETHYL-2,3-DINITRO-N-BUTANE;2,3-Dinitro-2,3-dimethylbutane | | CAS: | 3964-18-9 | | MF: | C6H12N2O4 | | MW: | 176.17 | | EINECS: | 223-569-9 | | Product Categories: | Nitro Compounds;Nitrogen Compounds;Organic Building Blocks | | Mol File: | 3964-18-9.mol |  |
| | 2,3-DIMETHYL-2,3-DINITROBUTANE Chemical Properties |
| Melting point | 214-215 °C (dec.) (lit.) | | Boiling point | 257.77°C (rough estimate) | | density | 1.1857 (estimate) | | vapor pressure | 128 hPa (96 mm Hg) | | refractive index | 1.4660 (estimate) | | storage temp. | Freeze (<-10 °C) | | form | powder to crystal | | color | White to Almost white | | InChI | InChI=1S/C6H12N2O4/c1-5(2,7(9)10)6(3,4)8(11)12/h1-4H3 | | InChIKey | DWCLXOREGBLXTD-UHFFFAOYSA-N | | SMILES | CC(C)([N+]([O-])=O)C(C)([N+]([O-])=O)C | | CAS DataBase Reference | 3964-18-9(CAS DataBase Reference) | | EPA Substance Registry System | Butane, 2,3-dimethyl-2,3-dinitro- (3964-18-9) |
| Hazard Codes | T | | Risk Statements | 25 | | Safety Statements | 45 | | RIDADR | UN 2811 6.1/PG 2 | | WGK Germany | 3 | | RTECS | EJ9943333 | | HazardClass | 4.1/6.1 | | PackingGroup | II | | HS Code | 29042090 |
| | 2,3-DIMETHYL-2,3-DINITROBUTANE Usage And Synthesis |
| Description | 2,3-Dimethyl-2,3-dinitrobutane (DMNB), a nitroalkane compound used as a propellant, foaming agent and explosives detector, is an important additive component in the manufacture of explosives, and the product has been used to develop a rapid square-wave voltammetry measurement protocol for tagging on unmodified carbon fibre electrodes (DMNB Explosives). | | Chemical Properties | white to off-white crystals or cryst. powder | | Physical properties | sublimes at room temperature | | Uses | 2,3-Dimethyl-2,3-dinitrobutane (DMNB) is an additive required for commercial plastic explosives. The product has been used to develop a fast, square-wave voltammetric measurement protocol of taggant (DMNB explosive) at an unmodified carbon fiber electrode. This protocol used a phosphate buffer solution at pH 7.0. | | Synthesis Reference(s) | Journal of the American Chemical Society, 96, p. 2580, 1974 DOI: 10.1021/ja00815a043
The Journal of Organic Chemistry, 35, p. 295, 1970 | | Toxicology | Toxicologists at the U.S. Army Center for Health Promotion and
Preventive Medicine have proposed an occupational exposure limit (OEL)
for 2,3-Dimethyl-2,3-dinitrobutane(DMNB) of 0.15 mg/m3. | | Synthesis | The synthesis of 2,3-dimethyl-2,3-dinitrobutane is as follows: Add 4.5 g (0.05 mol) of 2-nitropropane and 9 mL of a 6 mol/L sodium hydroxide solution to a 100 mL three-necked flask. The reaction was stirred magnetically for 0.5 h in an ice-water bath, and 4 g (0.025 mol) of liquid bromine was added dropwise to the flask using a constant pressure dropping funnel. After the dropwise addition was completed, 15 mL of absolute ethanol was added to thereto, and stirring was continued in an ice bath for 0.5 h. Then the ice bath was removed, the temperature was raised to 90℃, and the reaction was refluxed for 2 hours to stop the reaction. After the reaction liquid was naturally cooled to room temperature, a large amount of white solid precipitated, filtered, washed several times with absolute ethanol and distilled water, and dried under vacuum to obtain 40.13 g of white flake crystals. The yield was 91.2%.
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| | 2,3-DIMETHYL-2,3-DINITROBUTANE Preparation Products And Raw materials |
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