Label abbreviations descriptions

FENTHION

Chemical Identification
CAS # 55-38-9
Formula

C₁₀H₁₅O₃PS₂
Synonyms

Baytex; Entex; O,O-dimethyl O-3-methyl-4-methylthiophenyl phosphorothioate

Physical Properties
Physical description Colorless to brown liquid with a slight, garlic-like odor.
Boiling point Molecular weight 278.3
Freezing point/melting point 43°F Vapor pressure 0.0003 mmHg
Flash point Vapor density
Specific gravity 1.25 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
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
 

0.2 mg/m³

 TLV-TWA
 

0.05 mg/m³ (inhalable fraction and vapor) [2005]

 PEL-TWA
 

0.2 mg/m³
PEL-STEL REL-STEL
 

 

 TLV-STEL
 

 

 PEL-STEL
 

 
PEL-C REL-C
 

 

 TLV-C
 

 

 PEL-C
 

 
Skin notation
 

NA

 Skin notation
 

N

 Skin notation
 

Y

 Skin notation
 

Y
Notes:
 

Not established

 Notes:
 

 

 Notes:
 

BEI®

 Notes:
 

 
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: TLV-A4 Notes:
 

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

 

Additional Resources and Literature References

Last Updated Date : 12/29/2020