DICHLORVOS (DDVP)†

Chemical Identification
Chemical Identification
CAS # 62-73-7
Formula

C₄H₇Cl₂O₄P

Synonyms

DDVP; 2,2-dichlorovinyl dimethyl phosphate

Physical Properties
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
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.

Wipe Method
Wipe Method
Sampler/Sampling media

Wipe with GFF (37 mm), Type A/E [AP4003705]

Bulk Method
Bulk Method

Limit the amount of bulk submitted to 1 g or 1 mL.

On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
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
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