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Phenylhydrazine

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Synonyms & Trade Names
Hydrazinobenzene, Monophenylhydrazine
CAS No.
100-63-0
RTECS No.
MV8925000
DOT ID & Guide
2572 153
Formula
C₆H₅NHNH₂
Conversion
1 ppm = 4.42 mg/m3
IDLH
Ca [15 ppm]
See: 100630
Exposure Limits
NIOSH REL
Ca C 0.14 ppm (0.6 mg/m3) [2-hr] [skin] See Appendix A
OSHA PEL
TWA 5 ppm (22 mg/m3) [skin] See Appendix G
Measurement Methods
NIOSH 3518
See: NMAM or OSHA Methods
Physical Description
Colorless to pale-yellow liquid or solid (below 67°F) with a faint, aromatic odor.
Molecular Weight
108.1
Boiling Point
470°F (Decomposes)
Freezing Point
67°F
Solubility
Slight
Vapor Pressure
(77°F): 0.04 mmHg
Ionization Potential
7.64 eV
Specific Gravity
1.10
Flash Point
190°F
Upper Explosive Limit
?
Lower Explosive Limit
?
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F. Combustible Solid
Incompatibilities & Reactivities
Strong oxidizers, lead dioxide
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Skin sensitization, hemolytic anemia, dyspnea (breathing difficulty), cyanosis; jaundice; kidney damage; vascular thrombosis; [potential occupational carcinogen]
Target Organs
Blood, respiratory system, liver, kidneys, skin
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/Daily
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash 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: 0938   MEDICAL TESTS: 0184
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health