Label abbreviations descriptions

METHYL DEMETON

Chemical Identification
CAS # 8022-00-2
Formula
 
 

C₆H₁₅O₃PS₂
Synonyms
 
 

demeton methyl; O,O-dimethyl 2-ethylmercaptoethyl thiophosphate; metasystox; methyl mercaptophos; methyl systox

Physical Properties
Physical description Oily, colorless to pale-yellow liquid with an unpleasant odor.
Boiling point decomposes Molecular weight 230.3
Freezing point/melting point Vapor pressure 0.0004 mmHg
Flash point Vapor density
Specific gravity 1.20 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
 
 

0.5 mg/m³

 TLV-TWA
 
 

0.05 mg/m³ (inhalable fraction and vapor) [2006]

 PEL-TWA
 
 

0.05 mg/m³
PEL-STEL
 
 

 

 REL-STEL
 
 

 

 TLV-STEL
 
 

 

 PEL-STEL
 
 

 
PEL-C
 
 

 

 REL-C
 
 

 

 TLV-C
 
 

 

 PEL-C
 
 

 
Skin notation
 
 

NA

 Skin notation
 
 

Y

 Skin notation
 
 

Y

 Skin notation
 
 

Y
Notes:
 
 

Not established

 Notes:
 
 

 

 Notes:
 
 

BEI®

 Notes:
 
 

 
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: Not listed Notes:
 
 

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

 

Additional Resources and Literature References

Last Updated Date : 01/05/2021