SPECTRUM

Chemical Fact Sheet

Chemical Abstract Number (CAS #) 100254
CASRN 100-25-4
Synonyms1,4-Dinitrobenzene
Benzene, 1,4-dinitro-
p-Dinitrobenzene
Molecular FormulaC6H4N2O4

Link to the National Library of Medicine's Hazardous Substances
Database for more details on this compound.

Use ORGANIC SYNTHESIS; DYES; CAMPHOR SUBSTITUTE IN CELLULOSE NITRATE. DINITROBENZENE 97% of nitrobenzene is used to reduce aniline, which has wide application in the manufacture of dyes, & medicines. Nitrobenzenes
Apparent Color WHITE CRYSTALS; NEEDLES FROM ALC; COLORLESS TO YELLOW MONOCLINIC NEEDLES; Pale yellow solid; Yellow crystals
Boiling Point 299 DEG C
Melting Point 173-174 DEG C
Molecular Weight 168.12
Density 1.625 @ 18 DEG C/4 DEG C
Sensitivity Data Eyes are irritated by liquid. 1,3-Dinitrobenzene
Environmental Impact Environmental release of 1,4-dinitrobenzene may result from its use as an intermediate in organic syntheses and in the production of dyes. 1,4-Dinitrobenzene released to soil may result in adsorption to clay but adsorption to other soils is expected to be weak; therefore, leaching in soils may occur. Volatilization from soil surfaces may occur but is expected to be slow. Reduction to aromatic amines may occur under anaerobic conditions. Release of 1,4-dinitrobenzene to water may result in biodegradation and slow volatilization from water surfaces. Direct photolysis may occur based upon its absorption of UV light >290 nm. Bioconcentration and hydrolysis are not expected to be significant. Release of 1,4-dinitrobenzene to the atmosphere is expected to result in the reaction of 1,4-dinitrobenzene with photochemically generated hydroxyl radicals with an estimated half-life of 14.15 hr. Direct photolysis in the atmosphere may also occur.
Environmental Fate TERRESTRIAL FATE: 1,4-Dinitrobenzene released to soil may result in adsorption to clay but adsorption to other soils is expected to be weak; therefore leaching to soils may occur. Biodegradation may be significant. Reduction to aromatic amines may occur under anaerobic conditions. Volatilization from the soil surface may occur but is expected to be slow. AQUATIC FATE: 1,4-Dinitrobenzene may biodegrade in water and volatilization may occur, but is expected to be slow because of a low Henry's Law constant Direct photolysis may occur since 1,4-dinitrobenzene absorbs UV light >290 nm. Measured and estimated bioconcentration factors suggest no bioconcentration in aquatic organisms and 1,4-dinitrobenzene has no hydrolyzable functional groups. ATMOSPHERIC FATE: The half-life for the reaction of vapor phase 1,4-dinitrobenzene with photochemically generated hydroxyl radicals in the atmosphere was estimated to be 14.15 hr . Direct photolysis may occur, but a rate cannot be estimated using the available information.

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