Methyl hydrazine
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CAS
60-34-4
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CH3NHNH2
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RTECS
MV5600000
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Synonyms & Trade Names
MMH, Monomethylhydrazine
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DOT ID & Guide
1244 131
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Exposure
Limits
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NIOSH REL: Ca C 0.04 ppm (0.08 mg/m3) [2-hr] See Appendix A
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OSHA PEL: C 0.2 ppm (0.35 mg/m3) [skin]
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IDLH
Ca [20 ppm]
See: 60344
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Conversion
1 ppm = 1.89 mg/m3
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Physical Description
Fuming, colorless liquid with an ammonia-like odor.
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MW: 46.1
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BP: 190°F
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FRZ: -62°F
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Sol: Miscible
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VP: 38 mmHg
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IP: 8.00 eV
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Sp.Gr(77°F): 0.87
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Fl.P: 17°F
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UEL: 92%
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LEL: 2.5%
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Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
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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
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Measurement Methods
NIOSH 3510
See: NMAM or OSHA Methods
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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
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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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
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, respiratory system; vomiting, diarrhea, tremor, ataxia; anoxia, cyanosis; convulsions; [potential occupational carcinogen]
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Target Organs
Eyes, skin, respiratory system, central nervous system, liver, blood, cardiovascular system
Cancer Site
[in animals: lung, liver, blood vessel & intestine tumors]
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See also: INTRODUCTION
See ICSC CARD: 0180 See MEDICAL TESTS: 0142
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