PHENYLHYDRAZINE†

Chemical Identification
Chemical Identification
CAS # 100-63-0
Formula

C₆H₈N₂

Synonyms

hydrazinobenzene; monophenylhydrazine

Physical Properties
Physical Properties
Physical description Colorless to pale-yellow liquid or solid (below 67°F) with a faint, aromatic odor.
Boiling point 470°F (decomposes) Molecular weight 108.16
Freezing point/melting point 67°F Vapor pressure 0.04 mmHg at 77°F
Flash point 190°F Vapor density
Specific gravity 1.1 Ionization potential 7.64 eV
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 3 NFPA fire rating 2
NFPA reactivity rating 0 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 2060
Sampling group
Sampler/Sampling media Glass midget bubbler with 15 mL 0.1M hydrochloric acid
Sampling time*
Sampling volume (TWA)*

25-120 L

Sampling flow rate (TWA)*

0.2-1 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments VIS
Method reference NIOSH 3518 (fully validated)
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device Infrared spectrophotometer
Model/Type Miran 1A & 1B
Sampling information
(see manufacturer instructions)
3.4 ppm@8.5 µm
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

5 ppm (22 mg/m³)

REL-TWA TLV-TWA

0.1 ppm [1998]

PEL-TWA

5 ppm (20 mg/m³)

PEL-STEL REL-STEL TLV-STEL PEL-STEL

10 ppm (45 mg/m³)

PEL-C REL-C

0.14 ppm (0.6 mg/m³) [120 minutes]

TLV-C PEL-C
 

 

Skin notation

Y

Skin notation

Y

Skin notation

Y

Skin notation
 

Y

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes:

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens.

Notes: Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

15 ppm

Carcinogenic classifications: NIOSH-Ca, TLV-A3 Notes:
 

Ca

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Phenylhydrazine

NIOSH: Pocket Guide to Chemical Hazards - Phenylhydrazine

Literature References

 
    • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Phenylhydrazine. See annual publication for most recent information.

Last Updated Date : 01/08/2021