Suvarna Garge (Editor)

2,4 Dinitrotoluene

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Formula  C7H6N2O4
Melting point  70 °C
Molar mass  182.134 g/mol
Density  1.52 g/cm³
2,4-Dinitrotoluene File24Dinitrotoluene acsvsvg Wikimedia Commons
Appearance  Pale yellow to orange crystalline solid

2,4-Dinitrotoluene (DNT) or dinitro is an organic compound with the formula C7H6N2O4. This pale yellow crystalline solid is well known as a precursor to trinitrotoluene (TNT) but is mainly produced as a precursor to toluene diisocyanate.

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2,4-Dinitrotoluene 24Dinitrotoluene121142IR3

Isomers of dinitrotoluene

2,4-Dinitrotoluene 24Dinitrotoluene Exporter 24Dinitrotoluene Manufacturer India

Six isomers are possible for dinitrotoluene. The most common one is 2,4-dinitrotoluene. The nitration of toluene gives sequentially mononitrotoluene, DNT, and finally TNT. 2,4-DNT is the principal product from dinitration, the other main product being about 30% 2,6-DNT. The nitration of 4-nitrotoluene gives 2,4-DNT.

Applications

2,4-Dinitrotoluene Saturation Mutagenesis of Burkholderia cepacia R34 24

Most DNT is used in the production of toluene diisocyanate, which is used to produce flexible polyurethane foams. DNT is hydrogenated to produce 2,4-toluenediamine, which in turn is phosgenated to give toluene diisocyanate. In this way, about 1.4 billion kilograms are produced annually, as of the years 1999–2000. Other uses include the explosives industry. It is not used by itself as an explosive, but some of the production is converted to TNT.

2,4-Dinitrotoluene Polyurethanes

Dinitrotoluene is frequently used as a plasticizer, deterrent coating, and burn rate modifier in propellants (e.g., smokeless gunpowders). As it is carcinogenic and toxic, modern formulations tend to avoid its use. In this application it is often used together with dibutyl phthalate.

Toxicity

Dinitrotoluenes are highly toxic with a threshold limit value (TLV) of 1.5 mg/m3. It converts hemoglobin into methemoglobin.

2,4-Dinitrotoluene httpsuploadwikimediaorgwikipediacommonsthu

2,4-Dinitrotoluene is also a listed hazardous waste under 40 CFR 261.30. Its United States Environmental Protection Agency (EPA) hazardous waste Number is D030. The maximum concentration that may be contained to not have toxic characteristics is 0.13 mg/L.

2,4-Dinitrotoluene 24Dinitrotoluene C7H6N2O4 ChemSpider
2,4-Dinitrotoluene 34Dinitrotoluene 99 SigmaAldrich
2,4-Dinitrotoluene 24dinitrotoluene Global Sources

References

2,4-Dinitrotoluene Wikipedia


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