NIOSH Pocket Guide to Chemical Hazards


CAS 79-46-9


RTECS TZ5250000
Synonyms & Trade Names
Dimethylnitromethane, iso-Nitropropane, 2-NP
DOT ID & Guide
2608 129


NIOSH REL: Ca See Appendix A
OSHA PEL: TWA 25 ppm (90 mg/m3)
IDLH Ca [100 ppm] See: 79469 Conversion 1 ppm = 3.64 mg/m3
Physical Description
Colorless liquid with a pleasant, fruity odor.
MW: 89.1
BP: 249°F
FRZ: -135°F
Sol: 2%
VP: 13 mmHg
IP: 10.71 eV

Sp.Gr: 0.99
Fl.P: 75°F
UEL: 11.0%
LEL: 2.6%

Class IC Flammable Liquid: Fl.P. at or above 73F and below 100F.
Incompatibilities & Reactivities
Amines; strong acids, alkalis & oxidizers; metal oxides; combustible materials
Measurement Methods
NIOSH 2528; OSHA 15, 46
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet (flammable)
Change: No recommendation

First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Important additional information about respirator selection
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: Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, nose, respiratory system; headache, anorexia, nausea, vomiting, diarrhea; kidney, liver damage; [potential occupational carcinogen]
Target Organs Eyes, skin, respiratory system, central nervous system, kidneys, liver

Cancer Site [in animals: liver tumors]
See also: INTRODUCTION   See ICSC CARD: 0187   See MEDICAL TESTS: 0166