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Hydrazine																				Related Pages
Synonyms & Trade Names
			Diamine, Hydrazine (anhydrous), Hydrazine base
CAS No.
			302-01-2
	RTECS No.
			MU7175000
	DOT ID & Guide
			2029 132(anhydrous)3293 152(≤ 37% solution)2030 153(37-64% solution)2029 132(>64% solution)

FormulaH2NNH2
	Conversion
			1 ppm = 1.31 mg/m3
	IDLH
			Ca [50 ppm]See: 302012

Exposure Limits
			NIOSH RELCa C 0.03 ppm (0.04 mg/m3) [2-hour] See Appendix A
					OSHA PEL TWA 1 ppm (1.3 mg/m3) [skin] See Appendix G
	Measurement Methods
			**NIOSH** 3503;**OSHA** 20 , 108
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless, fuming, oily liquid with an ammonia-like odor.
					[Note: A solid below 36°F.]													
										
Molecular Weight32.1	
	Boiling Point236°F
	Freezing Point36°F
	SolubilityMiscible
	Vapor Pressure10 mmHg
	Ionization Potential8.93 eV											
Specific Gravity1.01	
	Flash Point99°F
	Upper Explosive Limit98%
	Lower Explosive Limit2.9%
Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Incompatibilities & Reactivities
			Oxidizers, hydrogen peroxide, nitric acid, metallic oxides, acids
					[Note: Can ignite SPONTANEOUSLY on contact with oxidizers or porous materials such as earth, wood & cloth.]
Exposure Routes
			inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
			irritation eyes, skin, nose, throat; temporary blindness; dizziness, nausea; dermatitis; eye, skin burns; In Animals: bronchitis, pulmonary edema; liver, kidney damage; convulsions; [potential occupational carcinogen]
Target Organs
			Eyes, skin, respiratory system, central nervous system, liver, kidneys
Cancer Site[in animals: tumors of the lungs, liver, blood vessels & intestine]										
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: 0281
					  MEDICAL TESTS: 0115

			
							

			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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Chemical Names, Synonyms and Trade Names
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
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Z
CAS Numbers
RTECS Numbers
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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