Label abbreviations descriptions

PHOSPHORUS OXYCHLORIDE

Chemical Identification
CAS # 10025-87-3
Formula

Cl₃OP
Synonyms

phosphorus chloride; phosphorus oxytrichloride; phosphoryl chloride

Physical Properties
Physical description Clear, colorless to yellow, oily liquid with a pungent & musty odor.
Boiling point 223°F Molecular weight 153.32
Freezing point/melting point 34.2°F Vapor pressure 40 mmHg at 81.14°F
Flash point Vapor density 5.3
Specific gravity 1.645 at 77°F Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 4 NFPA fire rating 0
NFPA reactivity rating 2 NFPA special instruction W: Reacts violently or explosively with water.
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time*
Sampling volume (TWA)*
Sampling flow rate (TWA)*
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference
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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
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 REL-TWA
 

0.1 ppm (0.6 mg/m³)

 TLV-TWA
 

0.1 ppm [1979]

 PEL-TWA
 

0.1 ppm (0.6 mg/m³)
PEL-STEL REL-STEL
 

0.5 ppm (3 mg/m³)

 TLV-STEL
 

 

 PEL-STEL
 

 
PEL-C
 

 

 REL-C
 

 

 TLV-C
 

 

 PEL-C
 

 
Skin notation
 

NA

 Skin notation
 

N

 Skin notation
 

N

 Skin notation
 

N
Notes:
 

Not established

 Notes:
 

 

 Notes:
 

 

 Notes:
 

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

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

 

Additional Resources and Literature References

Last Updated Date : 01/08/2021