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Hydrazine

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)
Formula
H₂NNH₂
Conversion
1 ppm = 1.31 mg/m3
IDLH
Ca [50 ppm]
See: 302012
Exposure Limits
NIOSH REL
Ca 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 Weight
32.1
Boiling Point
236°F
Freezing Point
36°F
Solubility
Miscible
Vapor Pressure
10 mmHg
Ionization Potential
8.93 eV
Specific Gravity
1.01
Flash Point
99°F
Upper Exposive Limit
98%
Lower Explosive Limit
2.9%
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

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