NIOSH Pocket Guide to Chemical Hazards

Dinitrotoluene CAS 25321-14-6
CH3C6H3(NO2)2 RTECS XT1300000
Synonyms & Trade Names
Dinitrotoluol, DNT, Methyldinitrobenzene [Note: Various isomers of DNT exist.]
DOT ID & Guide
1600 152 (molten)
2038 152 (solid)
NIOSH REL: Ca TWA 1.5 mg/m3 [skin] See Appendix A
OSHA PEL: TWA 1.5 mg/m3 [skin]
IDLH Ca [50 mg/m3] Conversion
Physical Description
Orange-yellow crystalline solid with a characteristic odor. [Note: Often shipped molten.]
MW: 182.2
BP: 572°F
MLT: 158°F
Sol: Insoluble
VP: 1 mmHg
IP: ?

Sp.Gr: 1.32
Fl.P: 404°F
UEL: ?
LEL: ?

Combustible Solid, but difficult to ignite.
Incompatibilities & Reactivities
Strong oxidizers, caustics, metals such as tin & zinc [Note: Commercial grades will decompose at 482°F, with self-sustaining decomposition at 536°F.]
Measurement Methods
Personal Protection & Sanitation
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated/Daily
Remove: When wet or contaminated
Change: Daily
Provide: Quick drench
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations NIOSH
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Anoxia, cyanosis; anemia, jaundice; reproductive effects; [potential occupational carcinogen]
Target Organs Blood, liver, cardiovascular system, reproductive system

Cancer Site [in animals: liver, skin & kidney tumors]