DICHLORVOS (DDVP) | Occupational Safety and Health Administration

DICHLORVOS (DDVP)†

Chemical Identification
CAS #	62-73-7
Formula	C₄H₇Cl₂O₄P
Synonyms	DDVP; 2,2-dichlorovinyl dimethyl phosphate

Physical Properties
Physical description	Colorless to amber liquid with a mild, chemical odor.
Boiling point	284°F at 20 mmHg	Molecular weight	221
Freezing point/melting point	183°F	Vapor pressure	0.01 mmHg
Flash point	>175°F	Vapor density
Specific gravity	1.42	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	3	NFPA fire rating	1
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	0850
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^*	480 min
Sampling volume (TWA)^*	480 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*	15 L
Sampling flow rate (STEL/Peak/C)^*	1 L/min
Analytical method instruments	GC-FPD
Method reference	OSHA 62 (fully 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	Wipe with GFF (37 mm), Type A/E [AP4003705]
Bulk Method	Limit the amount of bulk submitted to 1 g or 1 mL.

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	1 mg/m³	REL-TWA	1 mg/m³	TLV-TWA	0.1 mg/m³ (inhalable fraction and vapor) [1998]	PEL-TWA	0.1 ppm (1 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	Y	Skin notation	Y	Skin notation	Y	Skin notation	Y
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes: dermal sensitizer (DSEN)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	100 mg/m³
Carcinogenic classifications: IARC-2B, TLV-A4,EPA-B2		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Dichlorvos

NIOSH: Pocket Guide to Chemical Hazards - Dichlorvos

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Dichlorvos. See annual publication for most recent information.
EPA Air Toxics Website: Dichlorvos. U.S. Environmental Protection Agency Technology Transfer Network, Feb. 13, 2003.
Bryant, D.H.: Asthma due to insecticide sensitivity. Aust. N.Z. J. Med. 15(1): 66-68, 1985.
Deschamps, D., Questel, F., Baud, F.J., Gervais, P. and Dally, S.: Persistent asthma after acute inhalation of organophosphate insecticide. Lancet 344(8938): 1712, 1994.
Mason, H.J.: The recovery of plasma cholinesterase and erythrocyte acetylcholinesterase activity in workers after over-exposure to dichlorvos. Occup. Med. (Lond.) 50(5): 343-347, 2000.
Pohanish, R.P. (editor): Dichlorvos. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 844-846.
Sevim, S., Aktekin, M., Dogu, O., Ozturk, H. and Ertas, M.: Late onset polyneuropathy due to organophosphate (DDVP) intoxication. Can. J. Neurol. Sci. 30(1): 75-78, 2003.
Vasconcellos, L.F. Leite, A.C. and Nascimento, O.J.: Organophosphate-induced delayed neuropathy: case report. Arq. Neuropsiquiatr. 60(4): 1003-1007, 2002.

Last Updated Date : 12/22/2020

DICHLORVOS (DDVP)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References