Phosdrin®
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CAS
7786-34-7
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C7H13PO6
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RTECS
GQ5250000
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Synonyms & Trade Names
2-Carbomethoxy-1-methylvinyl dimethyl phosphate, Mevinphos [Note: Commercial product is a mixture of the cis- & trans-isomers.]
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DOT ID & Guide
2783 / 152
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Exposure
Limits
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NIOSH REL: TWA 0.01 ppm (0.1 mg/m3) ST 0.03 ppm (0.3 mg/m3) [skin]
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OSHA PEL†: TWA 0.1 mg/m3 [skin]
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IDLH
4 ppm
See: 7786347
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Conversion
1 ppm = 9.17 mg/m3
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Physical Description
Pale-yellow to orange liquid with a weak odor. [Note: Insecticide that may be absorbed on a dry carrier.]
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MW: 224.2
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BP: Decomposes
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FRZ: 44°F (trans-) 70°F (cis-)
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Sol: Miscible
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VP: 0.003 mmHg
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IP: ?
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Sp.Gr: 1.25
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Fl.P(oc): 347°F
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UEL: ?
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LEL: ?
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Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
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Incompatibilities & Reactivities
Strong oxidizers [Note: Corrosive to cast iron, some stainless steels & brass.]
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Measurement Methods
NIOSH 5600
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
Provide: Eyewash, Quick drench
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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 0.1 ppm:
(APF = 10) Any supplied-air respirator
Up to 0.25 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 0.5 ppm:
(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 4 ppm:
(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, respiratory system; miosis; rhinorrhea (discharge of thin mucus); headache; chest tightness, wheezing, laryngeal spasm, salivation, cyanosis; anorexia, nausea, vomiting, abdominal cramps, diarrhea; paralysis; ataxia, convulsions; low blood pressure, cardiac irregularities
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Target Organs
Eyes, skin, respiratory system, central nervous system, cardiovascular system, blood cholinesterase
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See also: INTRODUCTION
See ICSC CARD: 0924 See MEDICAL TESTS: 0185
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