2,3-DIMETHYL-2,3-DINITROBUTANE

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 Structure
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)
form powder to crystal
color White to Almost white
CAS DataBase Reference3964-18-9(CAS DataBase Reference)
EPA Substance Registry SystemButane, 2,3-dimethyl-2,3-dinitro- (3964-18-9)
Safety Information
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
MSDS Information
ProviderLanguage
ACROS English
SigmaAldrich English
2,3-DIMETHYL-2,3-DINITROBUTANE Usage And Synthesis
Chemical Propertieswhite to off-white crystals or cryst. powder
Uses2,3-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
SynthesisThe 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%.
synthesis of 2,3-DIMETHYL-2,3-DINITROBUTANE

2,3-DIMETHYL-2,3-DINITROBUTANE Preparation Products And Raw materials
Preparation ProductsN,N'-DIHYDROXY-2,3-DIMETHYL-2,3-BUTANEDIAMINE-->Triacetonamine
Methyl cellulose 2,3-Dimethyl-2,3-diphenylbutane 4-Chloro-2,3-dimethylpyridine 1-oxide 2,3-DIMETHYL-2,3-DINITROBUTANE 1-Nitropropane 2-Nitropropane 2-methyl-1-nitropropane N,N'-DIHYDROXY-2,3-DIMETHYL-2,3-BUTANEDIAMINE 2-Nitrobutane N-Isopropylhydroxylamine (S)-(+)-2-Amino-3-methylbutane 2-Methyl-2-nitropropane Nitroethane

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