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Chemical Sampling Information (CSI)
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General Description

Synonyms: Hydrazinobenzene

OSHA IMIS Code Number: 2060

Chemical Abstracts Service (CAS) Registry Number: 100-63-0

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: MV8925000; 40718

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN2572 Poison

NIOSH Pocket Guide to Chemical Hazards, Phenylhydrazine: chemical description, physical properties, potentially hazardous incompatibilities, and more

Chemical Description and Physical Properties:

colorless to pale yellow solid or liquid with a weak, aromatic odor
molecular weight: 108
vapor pressure: <0.1 mm
boiling point: 469°F
melting point: 68°F

Incompatibilities: Strong oxidizers, lead dioxide

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 5 ppm, 22 mg/m3 (Skin)

Construction Industry: 5 ppm, 22 mg/m3 TWA (Skin)

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 ppm, 0.44 mg/m3 TWA (Skin); Appendix A3 (Confirmed Animal Carcinogen with Unknown Relevance to Humans)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): Potential Carcinogen, 0.14 ppm Ceiling (120 min) (Skin)

Health Factors

Potential Symptoms: Skin sensitization; hemolytic anemia; dyspnea; cyanosis; jaundice; kidney damage; vascular thrombosis; (carcinogenic)

Health Effects: Hemolytic anemia (HE12); Irritation-Skin---Moderate (HE15) Skin sensitization (HE3)

Affected Organs: Blood, respiratory system, liver, kidneys, skin

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Midget Fritted Glass Bubbler (MFGB) 15 mL 0.1 N HCl
    maximum volume: 100 Liters  
    maximum flow rate:     1.0 L/min (TWA)
    maximum volume: 15 Liters  
    maximum flow rate:     1.0 L/min (STEL)
    current analytical method: Colorimetric
    method reference: 1 (NIOSH S-160)
    sampling and analytical error: 0.10
    method classification: Fully Validated

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 3.4 ppm @ 8.5 um
    class: Mfg

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