Methyl hydrazine |
Synonyms & Trade Names MMH, Monomethylhydrazine |
CAS No. 60-34-4 |
RTECS No. MV5600000 |
DOT ID & Guide 1244 131 |
FormulaCH3NHNH2 |
Conversion 1 ppm = 1.89 mg/m3 |
IDLH Ca [20 ppm]
See: 60344 |
Exposure Limits NIOSH REL: Ca C 0.04 ppm (0.08 mg/m3) [2-hr] See Appendix A
OSHA PEL: C 0.2 ppm (0.35 mg/m3) [skin] |
Measurement Methods
NIOSH 3510
See: NMAM or OSHA Methods |
Physical Description Fuming, colorless liquid with an ammonia-like odor. |
MW: 46.1 |
BP: 190°F |
FRZ: -62°F |
Sol: Miscible |
VP: 38 mmHg |
IP: 8.00 eV |
| Sp.Gr(77°F): 0.87 |
Fl.P: 17°F |
UEL: 92% |
LEL: 2.5% |
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| Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F. |
Incompatibilities & Reactivities Oxides of iron; copper; manganese; lead; copper alloys; porous materials such as earth, asbestos, wood & cloth; strong oxidizers such as fluorine & chlorine; nitric acid; hydrogen peroxide |
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin, respiratory system; vomiting, diarrhea, tremor, ataxia; anoxia, cyanosis; convulsions; [potential occupational carcinogen] |
Target Organs Eyes, skin, respiratory system, central nervous system, liver, blood, cardiovascular system |
Cancer Site[in animals: lung, liver, blood vessel & intestine tumors] |
Personal Protection/Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet (flammable)
Change: No recommendation
Provide: Eyewash, Quick drench |
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush 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:
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0180 See MEDICAL TESTS: 0142 |
