Chlormephos (Ref: MC 2188) |
![]() Last updated: 22/12/2020 |
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(Also known as: chlormethylfos; chlormefos) |
SUMMARY |
Chlormephos is an organophosphorus insecticide that is not approved for use in the EU. It has a moderate aqueous solubility and is not volatile. based on its chemical properties it would not normally be expected to leach to groundwater. It is not normally persistent in soil systems. It is highly toxic to mammals if ingested, inhaled or absorbed through skin , a cholinesterase inhibitor and a neurotoxciant. Ecotoxicology data is sparse but chlormephos is highly toxic to honey bees and moderately toxic to birds, fish and earthworms. |
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An insecticide used to control a wide range of foliage and soil dwelling pests | |
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Wireworms; Millipedes; Symphylids; Mealybugs; Cutowrms; Whiteflies, Leaf rollers; Caperpillars; Scale insects; Grasshoppers; Apple moth; Earwigs; Beetles; Borers | |
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Maize; Sugarbeet; Fruit including apples, pears, avocado, grapes, mango, citrus. kiwi; Vegetables; Cereals; Pasture | |
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Unknown | |
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circa 1973 |
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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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Expired | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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C₅H₁₂ClO₂PS₂ | |
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CCOP(=S)(OCC)SCCl | |
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No data | |
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QGTYWWGEWOBMAK-UHFFFAOYSA-N | |
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InChI=1S/C5H12ClO2PS2/c1-3-7-9(10,8-4-2)11-5-6/h3-5H2,1-2H3 | |
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Yes |
General status |
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Insecticide | |
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Organophosphate | |
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Synthetic | |
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Non-systemic with contact and stomach action. Acetylcholine esterase inhibitor. | |
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24934-91-6 | |
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246-538-1 | |
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337 | |
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295300 | |
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32739 | |
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234.70 | |
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S-(chloromethyl) O,O-diethyl phosphorodithioate | |
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S-chloromethyl O,O-diethyl phosphorodithioate | |
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S-(chloromethyl) O,O-diethyl phosphorodithioate | |
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Marine Pollutant; Chemical subject to PIC regulations | |
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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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None identified | |
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Colourless liquid |
Formulations |
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Usually supplied in a granular formulations |
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60 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Moderate | ||||||||
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Miscible | CA2 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Acetone2 = Unverified data of unknown source |
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Miscible | CA2 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Methanol2 = Unverified data of unknown source |
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Miscible | CA2 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Ethanole2 = Unverified data of unknown source |
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Miscible | CA2 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) Xylene2 = Unverified data of unknown source |
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1.10 X 1003 | Calculated | - | |||||||
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3.04 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
High | ||||||||
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1.26 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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0.0076 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Low volatility | ||||||||
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2.97 X 1001 | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source |
Moderately volatile | ||||||||
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Degradation |
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20 | W4 W = French database provided by ARVALIS-Institut du Végétal 4 = Verified data |
Non-persistent | |||||||
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Other sources: DT₅₀ 28 days, sandy soil (R4) | ||||||||||
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Soil adsorption and mobility |
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- | CA2 CA = Medical and toxicological databases and information systems e.g. TOXNET (click here ) 2 = Unverified data of unknown source |
Slightly mobile | |||||||
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Estimated | ||||||||||
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Fate indices |
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1.25 | Calculated | Low leachability | ||||||||||||||||||||||||||
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2.49 X 10-02 | Calculated | - | |||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Slightly mobile | Calculated | - |
Key metabolites |
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Soil | - | - |
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120 | Q3 Q = Miscellaneous internet resources (whole fish)3 = Unverified data of known source |
Threshold for concern | |||||||
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Not available | - | |||||||||
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> 7 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
High | ||||||||
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- | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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> 0.39 | - | |||||||||
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260 | L3 L = Pesticide manuals and hard copy reference books / other sources Coturnix japonica3 = Unverified data of known source |
Moderate | ||||||||
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2.5 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Rasbora heteromorpha3 = Unverified data of known source |
Moderate | ||||||||
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> 0.9 | E3 E = Manufacturers safety data sheets 3 = Unverified data of known source |
High | ||||||||
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> 1.0 | R4 R = Peer reviewed scientific publications Eisenia andrei as LOEC4 = Verified data |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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> 7 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
High | ||||||||
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7.0 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Rat4 = Verified data |
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List I; List II | - | - | ||||||||
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May be absorbed through dermal contact | ||||||||||
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Health issues |
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Very toxic if ingested, inhaled or absorbed through skin |
Handling issues |
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No information available | |||
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Health: H300, H310 Environment: H400, H410 |
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T+ - Very toxic: R27/28 N - Dangerous for the environment: R50, R53 |
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S1/2, S28, S36/37, S45, S60, S61 | |||
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Ia (Extremely hazardous) | |||
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3018 | |||
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chlormephos | ||
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chlorméphos | ||
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Chlormephos | ||
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chlormephos | ||
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clormefos | ||
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clormefos | ||
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chlormephos | ||
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chloromefos | ||
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chloormefos |
Record last updated: | 22/12/2020 |
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 |