Dichlorvos
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CAS
62-73-7
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(CH3O)2P(O)OCH=CCl2
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RTECS
TC0350000
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Synonyms & Trade Names
DDVP; 2,2-Dichlorovinyl dimethyl phosphate
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DOT ID & Guide
2783 / 152
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Exposure
Limits
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NIOSH REL: TWA 1 mg/m3 [skin]
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OSHA PEL: TWA 1 mg/m3 [skin]
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IDLH
100 mg/m3
See: 62737
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Conversion
1 ppm = 9.04 mg/m3
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Physical Description
Colorless to amber liquid with a mild, chemical odor. [Note: Insecticide that may be absorbed on a dry carrier.]
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MW: 221.0
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BP: Decomposes
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FRZ: ?
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Sol: 0.5%
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VP: 0.01 mmHg
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IP: ?
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Sp.Gr(77°F): 1.42
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Fl.P: >175°F
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UEL: ?
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LEL: ?
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Class III Combustible Liquid
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Incompatibilities & Reactivities
Strong acids, strong alkalis [Note: Corrosive to iron & mild steel.]
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Measurement Methods
NIOSH P&CAM295 (II-5); OSHA 62
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH/OSHA
Up to 10 mg/m3:
(APF = 10) Any supplied-air respirator
Up to 25 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 50 mg/m3:
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 100 mg/m3:
(APF = 1000) Any supplied-air respirator operated in a pressure-demand or other positive-pressure mode
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin; miosis, ache eyes; rhinorrhea (discharge of thin mucus); headache; chest tightness, wheezing, laryngeal spasm, salivation; cyanosis; anorexia, nausea, vomiting, diarrhea; sweating; muscle fasciculation, paralysis, dizziness, ataxia; convulsions; low blood pressure, cardiac irregularities
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Target Organs
Eyes, skin, respiratory system, cardiovascular system, central nervous system, blood cholinesterase
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See also: INTRODUCTION
See ICSC CARD: 0690 See MEDICAL TESTS: 0076
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