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Methyl hydrazine																				Related Pages
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 RELCa 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.													
										
Molecular Weight46.1	
	Boiling Point190°F
	Freezing Point-62°F
	SolubilityMiscible
	Vapor Pressure38 mmHg
	Ionization Potential8.00 eV											
Specific Gravity(77°F): 0.87	
	Flash Point17°F
	Upper Explosive Limit92%
	Lower Explosive Limit2.5%
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
					  ICSC CARD: 0180
					  MEDICAL TESTS: 0142

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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CAS Numbers
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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