# 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)
Exposure Limits | 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 OSHA 44
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]
See also: INTRODUCTION