Chlorthiophos

Chlorthiophos
Names
	IUPAC name (2,5-dichloro-4-methylsulfanylphenoxy)-diethoxy-sulfanylidene-λ5-phosphane
	Other names Celathion; Celamerck S-2957; Caswell No. 310A
Identifiers
CAS Number	60238-56-4 ;
3D model ( JSmol)	Interactive image;
ChemSpider	484552;
ECHA InfoCard	100.040.588
PubChem CID	30859;
UNII	O256QW5Y0Q ;
CompTox Dashboard (EPA)	DTXSID9041786 ;
	InChI InChI=1S/C11H15Cl2O4PS/c1-4-15-18(14,16-5-2)17-10-6-9(13)11(19-3)7-8(10)12/h6-7H,4-5H2,1-3H3 Key: ZYZAICVMEBZORH-UHFFFAOYSA-N; InChI=1/C11H15Cl2O4PS/c1-4-15-18(14,16-5-2)17-10-6-9(13)11(19-3)7-8(10)12/h6-7H,4-5H2,1-3H3 Key: ZYZAICVMEBZORH-UHFFFAOYAM;
	SMILES CCOP(=S)(OCC)OC1=CC(=C(C=C1Cl)SC)Cl;
Properties
Chemical formula	C11H15Cl2O3PS2
Molar mass	361.24 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chlorthiophos is an

organophosphorus

pesticide. It is a mixture of isomers:

O,O-diethyl-O-(2,5-dichloro-4-methylthio)phenyl phosphorothioate (ca. 73%)

O,O-diethyl-O-(4,5-dichloro-2-methylthio)phenyl phosphorothioate (ca. 13%)

O,O-diethyl-O-(2,4-dichloro-5-methylthio)phenyl phosphorothioate (ca. 14%)

It is extremely poisonous and is classified as an

extremely hazardous substance in the United States as defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. 11002), and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities.^[1]

References

^ "40 C.F.R.: Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities" (PDF) (July 1, 2008 ed.). Government Printing Office. Archived from the original (PDF) on February 25, 2012. Retrieved October 29, 2011. {{cite journal}}: Cite journal requires |journal= (help)

[gov-right-know-1] "40 C.F.R.: Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities" (PDF) (July 1, 2008 ed.). Government Printing Office. Archived from the original (PDF) on February 25, 2012. Retrieved October 29, 2011. {{cite journal}}: Cite journal requires |journal= (help)

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