Chlorthiophos

Chlorthiophos is an organophosphorus pesticide. It is a mixture of isomers:

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

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

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 requires |journal= (help)