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
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.040.588
UNII
  • 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
  • CCOP(=S)(OCC)OC1=CC(=C(C=C1Cl)SC)Cl
Properties
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}}: Cite journal requires |journal= (help)
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