Label abbreviations descriptions

PHOSPHINE†

Chemical Identification
CAS # 7803-51-2
Formula

H₃P
Synonyms

hydrogen phosphide; phosphorated hydrogen; phosphorus hydride; phosphorus trihydride

Physical Properties
Physical description Colorless gas with a fish- or garlic-like odor.
Boiling point -126°F Molecular weight 34
Freezing point/melting point -209°F Vapor pressure 41.3 atm
Flash point Vapor density 1.18
Specific gravity 0.746 at -130°F Ionization potential 9.96 eV
Lower explosive limit (LEL) 1.79% Upper explosive limit (UEL) Dangerous fire hazard from spontaneous chemical reaction.
NFPA health rating 4 NFPA fire rating 4
NFPA reactivity rating 2 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 2080
Sampling group
Sampler/Sampling media GFF and mercuric chloride-treated polyester filter [SKC 225-9018]
Sampling time*

240 min
Sampling volume (TWA)*

240 L
Sampling flow rate (TWA)*

1 L/min
Sampling volume (STEL/Peak/C)*

30 L
Sampling flow rate (STEL/Peak/C)*

2 L/min
Analytical method instruments ICP
Method reference OSHA 1003 (fully validated)
Notes

Results will be reported from the elemental analysis for the element only; the stated identity of the actual sample contents is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes.

An elemental result provided may be converted to the desired compound by multiplying the result by the appropriate stoichiometric factor. A 91B report specific to the compound (including the stoichiometric conversion) may by be provided upon request by contacting the laboratory. The stoichiometric factor for phosphine from phosphorus is 1.098.
Special requirements

Place a glass fiber filter in front of the treated polyester filter to collect solid particles.

* 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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device CMS Chip CMS Chip CMS Chip CMS Chip
Model/Type Phosphine, 0.1-2.5 ppm range Phosphine, 1-25 ppm range Phosphine, 20-500 ppm range Phosphine, 200-5000 ppm range
Sampling information
(see manufacturer instructions)

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

0.3 ppm (0.4 mg/m³)

 REL-TWA

0.3 ppm (0.4 mg/m³)

 TLV-TWA

0.05 ppm [2017]

 PEL-TWA

0.3 ppm (0.4 mg/m³)
PEL-STEL REL-STEL

1 ppm (1 mg/m³)

 TLV-STEL

0.15 ppm [2017]

 PEL-STEL

1 ppm (1 mg/m³)
PEL-C REL-C TLV-C PEL-C
Skin notation

N

 Skin notation

N

 Skin notation

N

 Skin notation

N
Notes:

See 29 CFR 1910.1000 Table Z-1.

 Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

50 ppm
Carcinogenic classifications: EPA-D, TLV-A4 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

--/0.5 ppm/5 ppm

Additional Resources and Literature References

Last Updated Date : 01/29/2021