tetrachlorvinphos tetrachlorvinphos tetrachlorvinphos is an organophosphate insecticide used to kill fleas and ticks. tetrachlorvinphos names preferred iupac name (z)-2-chloro-1-(2,4,5-trichlorophenyl)ethen-1-yl dimethyl phosphate other names stirofos; cvmp; tcvp identifiers cas number 22248-79-9 y 3d model (jsmol) interactive image beilstein reference 1890909 chebi chebi:35005 chembl chembl1452359 chemspider 4447527 echa infocard 100.040.772 ec number 244-865-4 kegg c14513d05929 pubchem cid 5284462 rtecs number tb9100000 unii dm33mw89qu y un number 2783 comptox dashboard (epa) dtxsid1032648 inchi inchi=1s/c10h9cl4o4p/c1-16-19(15,17-2)18-10(5-11)6-3-8(13)9(14)4-7(6)12/h3-5h,1-2h3/b10-5-key: ubckgwbnuifust-yhyxmxqvsa-n smiles cop(=o)(oc)o/c(=c\cl)/c1cc(c(cc1cl)cl)cl properties chemical formula c10h9cl4o4p molar mass 365.95 g·mol−1 melting point 97 to 98 °c (207 to 208 °f; 370 to 371 k) pharmacology atcvet code qp53af14 (who) qp53bb04 (who) hazards ghs labelling: pictograms signal word warning hazard statements h302, h332, h410 precautionary statements p261, p264, p270, p271, p273, p301+p312, p304+p312, p304+p340, p312, p330, p391, p501 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references history tetrachlorvinphos was initially registered for use in the united states in 1966 by the u.s. department of agriculture. tetrachlorvinphos was originally registered for use on various food crops, livestock, pet animals, and in or around buildings. the crop uses were voluntarily canceled from product registrations in 1987. in 2014, the natural resources defense council (nrdc) filed a lawsuit against the united states environmental protection agency (epa) seeking epa to respond to nrdc's 2009 petition to ban tetrachlorvinphos in common pet flea treatment products. human health hazards symptoms of exposure to this material include increased perspiration, nausea, lachrymation, salivation, blurred vision, diarrhea, pulmonary edema, respiratory embarrassment and convulsions. the chemical material may be absorbed through the skin and is a lachrymator. it is a cholinesterase inhibitor and is a positive animal carcinogen. chemical properties the substance is insoluble in water. flash point data are not available for this chemical; however, it is probably combustible. tetrachlorvinphos is slowly hydrolyzed in neutral and aqueous acidic media. is rapidly hydrolyzed in alkaline media. alternative chemical names this is a listing of alternate names for this chemical, including trade names and synonyms. benzyl alcohol, 2,4,5-trichloro-alpha-(chloromethylene)-, dimethyl phosphate 2-chloro-1-(2,4,5-trichlorophenyl)vinyl dimethyl phosphate 2-chloro-1-(2,4,5-trichlorophenyl)vinyl phosphoric acid dimethyl ester dimethyl 2,4,5-trichloro-alpha-(chloromethylene)benzyl phosphate gardona ipo 8 nci c00168 phosphoric acid, 2-chloro-1-(2,3,5-trichlorophenyl) ethenyl dimethyl ester phosphoric acid, 2-chloro-1-(2,4,5-trichlorophenyl)vinyl dimethyl ester rabon rabond tetrachlorvinphos 2,4,5-trichloro-alpha-(chloromethylene)benzyl alcohol dimethyl phosphate 2,4,5-trichloro-alpha-(chloromethylene)benzyl phosphate