Chlorthiophos (Ref: ENT 27635) |
![]() Last updated: 04/01/2021 |
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(Also known as: chlorthiophos; CM S-2957; celathion; OMS 1342; S 2597) |
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An obsolete organophosphate insecticide used mainly for the control of ants and mites | |
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Ants; Termites; Mites including varroa mite, phytophagous mites, spidermites; Thrips | |
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Cotton; Citrus | |
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Obsolete | |
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1971, first reported |
UK regulatory status |
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Not approved | ||
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Expired | ||
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No UK approval for use |
EC Regulation 1107/2009 (repealing 91/414) |
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Not approved | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Expired | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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Reaction mix of three isomers | |
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C₁₁H₁₅Cl₂O₃PS₂ | |
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CCOP(=S)(OCC)OC1=CC(=C(C=C1Cl)Cl)SC | |
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No data | |
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WIQNXNHXIZXZFM-UHFFFAOYSA-N | |
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InChI=1S/C11H15Cl2O3PS2/c1-4-14-17(18,15-5-2)16-8-6-9(12)11(13)10(7-8)19-3/h6-7H,4-5H2,1-3H3 | |
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Yes |
General status |
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Insecticide, Acaricide, Miticide | |
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Organophosphate | |
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Synthetic | |
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Acetylcholinesterase (AChE) inhibitor. | |
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60238-56-4 | |
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- | |
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8062 | |
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111814 | |
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30859 | |
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361.25 | |
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reaction mixture of the three isomers: (i) O-[2,4-dichloro-5-(methylsulfanyl)phenyl] O,O-diethyl phosphorothioate; (ii) O-[2,5-dichloro-4-(methylsulfanyl)phenyl] O,O-diethyl phosphorothioate (major component); and (iii) O-[4,5-dichloro-2-(methylsulfanyl)phenyl] O,O-diethyl phosphorothioate | |
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mix of (i) O-2,4-dichlorophenyl-5-methylthiophenyl O,O-diethyl phosphorothioate; (ii) O-2,5-dichlorophenyl-4-methylthiophenyl O,O-diethyl phosphorothioate (major component); and (iii) O-4,5-dichlorophenyl-2-methylthiophenyl O,O-diethyl phosphorothioate | |
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O-[dichloro(methylthio)phenyl] O,O-diethyl phosphorothioate | |
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Marine Pollutant | |
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Not applicable | |
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Not applicable | |
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1B | |
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Not applicable | |
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Culex pipiens pipiens | |
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Yellow-brown liquid |
Formulations |
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Was available in a wide variety of formulations including emulsifiable concentrates, dry powders, granules and wettable powders |
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2.19 X 1004 | Calculated | - | |||||||
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4.34 | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
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1.46 | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
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0.122 | CA3 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) 3 = Unverified data of known source |
Low volatility | ||||||||
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Degradation |
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Soil adsorption and mobility |
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- | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
Non-mobile | |||||||
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5461 | ||||||||||
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Fate indices |
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7.8 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
High | ||||||||
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1.3 | CA3 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Lepomis macrochirus3 = Unverified data of known source |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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7.8 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
High | ||||||||
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153 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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Absorbed by the skin, as well as by the respiratory and gastrointestinal tracts | ||||||||||
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Health issues |
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Extremely hazardous May cause conjunctival congestion and diminished vision May cause gastrointestinal symptoms |
Handling issues |
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May generate highly toxic and flammable phosphine gas under certain conditions Corrosive |
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Health: H300, H311 Environment: H400, H410 |
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T+ - Very Toxic: R28 T - Toxic: R24 N - Dangerous for the environment: R50, R53 |
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Ia (Extremely hazardous) | |||
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chlorthiophos | ||
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clortiofos | ||
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chlortiofos | ||
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Record last updated: | 04/01/2021 |
Contact: | aeru@herts.ac.uk |
Please cite as: | Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242 |