Label abbreviations descriptions

MONOCROTOPHOS

Chemical Identification
CAS # 6923-22-4
Formula
 

C₇H₁₄NO₅P
Synonyms
 

3-hydroxy-N-methylcrotonamide dimethylphosphate; Monocron

Physical Properties
Physical description Colorless to reddish-brown solid with a mild, ester odor.
Boiling point 257°F at 0.0005 mmHg Molecular weight 223.16
Freezing point/melting point 129°F Vapor pressure 0.000007 mmHg
Flash point >200°F Vapor density
Specific gravity 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.) 2690
Sampling group
Sampler/Sampling media OSHA versatile sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg) with GFF enclosed [SKC 226-30-16]
Sampling time*
Sampling volume (TWA)*

480 L
Sampling flow rate (TWA)*

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

 
Sampling flow rate (STEL/Peak/C)*
 

 
Analytical method instruments GC-FPD
Method reference OSHA PV2045 (partially 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.

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
 

0.25 mg/m³

 TLV-TWA
 

0.05 mg/m³ (inhalable fraction and vapor) [2002]

 PEL-TWA
 

 
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
 

N
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 : 01/05/2021