Cyanophos is a cholinesterase inhibitor[2] used as an insecticide and avicide; for example, against rice stem borers and house flies. It is part of the chemical class of organophosphorus compounds, and is a yellow to reddish-yellow transparent liquid.

Cyanophos
Names
Preferred IUPAC name
O-(4-Cyanophenyl) O,O-dimethyl phosphorothioate
Identifiers
3D model (JSmol)
2695901
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.018.301 Edit this at Wikidata
EC Number
  • 220-130-3
KEGG
UNII
UN number 3018
  • InChI=1S/C9H10NO3PS/c1-11-14(15,12-2)13-9-5-3-8(7-10)4-6-9/h3-6H,1-2H3
    Key: SCKHCCSZFPSHGR-UHFFFAOYSA-N
  • InChI=1/C9H10NO3PS/c1-11-14(15,12-2)13-9-5-3-8(7-10)4-6-9/h3-6H,1-2H3
    Key: SCKHCCSZFPSHGR-UHFFFAOYAF
  • COP(=S)(OC)OC1=CC=C(C=C1)C#N
Properties
C9H10NO3PS
Molar mass 243.22 g·mol−1
Appearance Yellow to reddish-yellow transparent liquid
Density 0.932 g/cm3
Melting point 14 to 15 °C; 57 to 59 °F; 287 to 288 K
Boiling point 119 to 120 °C; 246 to 248 °F; 392 to 393 K at 0.09 mmHg
Hazards
GHS labelling:
GHS06: ToxicGHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
Danger
H302, H311, H361, H370, H372, H400
P201, P202, P260, P264, P270, P273, P280, P281, P301+P312, P302+P352, P307+P311, P308+P313, P312, P314, P321, P322, P330, P361, P363, P391, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
2
1
1
Safety data sheet (SDS) [1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Safety

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Cyanophos can enter the body via inhalation, ingestion, and contact with the skin and eyes. Symptoms of cyanophos poisoning resemble those of the chemical weapon sarin and include dyspnea, vomiting, diarrhea, abdominal pain, bronchorrhea, blurred vision, and opsoclonus.[1]

It 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.[3]

Synonyms

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  • BAY 34727
  • Bayer 34727
  • Ciafos
  • Cyanofos
  • Cyanox
  • Cyap
  • ENT 25,675
  • O,O-dimethyl O-(4-cyanophenyl) phosphorothioate
  • O,O-dimethyl O-(p-cyanophenyl) phosphorothioate
  • O,O-dimethyl O-4-cyanophenyl phosphorothioate
  • O,O-dimethyl O-4-cyanophenyl thiophosphate
  • O,O-dimethyl-O-p-cyanophenyl phosphorothioate
  • O-p-cyanophenyl O,O-dimethyl phosphorothioate
  • Phosphorothioic acid O-(4-cyanophenyl) O,O-dimethyl ester
  • Phosphorothioic acid, O,O-dimethyl ester, O-ester with p-hydroxybenzonitrile
  • Phosphorothioic acid, O-p-cyanophenyl O,O-dimethyl ester
  • S 4084
  • Sumitomo S 4084

References

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  1. ^ a b "Material Safety Data Sheets: Cyanophos" (PDF). Central Pollution Control Board, Ministry of Environment & Forests, Government of India. Archived from the original (PDF) on 2012-04-22. Retrieved 2011-12-08.
  2. ^ "Cyanophos: CAMEO Chemicals". NOAA.gov. Retrieved 2011-12-08.
  3. ^ "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)