MCPA-etexyl |
Last updated: 22/08/2024 |
(Also known as: MCPA EHE) |
SUMMARY |
Data alerts |
The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement.
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A herbicide for control of annual and perennial weeds in cereals and other crops. Can also be a pesticide transformation product. | |
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Annual and perennial broad-leaved weeds including Charlock, Wild radish, Dandylion, Capeweed, Fat hen and Hedge mustards | |
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Wheat; Oats; Tritical; Rye; Establish grass; Lindseed; Asparagus | |
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Current | |
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circa 1950, introduced |
UK regulatory status |
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Approved | ||
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31/10/2029 | ||
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Check label - may vary with formulationl |
EC Regulation 1107/2009 (repealing 91/414) |
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Approved | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Poland/Netherlands | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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15/08/2026 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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No | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes - as the acid | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Additional information |
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Australia, USA |
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Chemical structure |
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Substance is racemic. | |
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C₁₇H₂₅ClO₃ | |
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IDGRPSMONFWWEK-UHFFFAOYSA-N | |
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InChI=1S/C17H25ClO3/c1-4-6-7-14(5-2)11-21-17(19)12-20-16-9-8-15(18)10-13(16)3/h8-10,14H,4-7,11-12H2,1-3H3 | |
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Yes |
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Common Name | Relationship | Link |
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MCPA | Parent |
General status |
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Herbicide | |
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Aryloxyalkanoic acid herbicide; Phenoxyacetic herbicide | |
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EU 2022 dossier: None declared | |
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Synthetic | |
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Selective, systemic with translocation. Synthetic auxin. | |
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29450-45-1 | |
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249-636-2 | |
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2 | |
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- | |
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607-051-00-3 | |
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312.83 | |
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rac-(2R)-2-ethylhexyl (4-chloro-2-methylphenoxy)acetate | |
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(RS)-2-ethylhexyl [(4-chloro-o-tolyl)oxy]acetate | |
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2-ethylhexyl 2-(4-chloro-2-methylphenoxy)acetate | |
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Potential groundwater contaminant | |
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UK Environment Agency non-statutory standard for the protection of freshwater aquatic life pH <7: 12 µg l⁻¹, pH >7 80 µg l⁻¹ as annual average; pH <7: 120 µg l⁻¹, pH >7 800 µg l⁻¹ as max acceptable conc. Data as the acid. For salt water 80 µg l⁻¹ as annual average, 800 µg l⁻¹ as max acceptable conc. Non-statutory WHO drinking water guideline 0.002 mg l⁻¹ | |
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O | |
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4 | |
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Not applicable | |
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Not applicable | |
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Raphanus raphanistrum, Sisymbrium orientale | |
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Clear pale yellow liquid | |
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Formulations |
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Often supplied as soluble concentrate, wettable powder or emulsifiable concentrate |
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0.125 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Low | ||||||||
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1000000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) n-Heptane5 = Verified data used for regulatory purposes |
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1000000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) p-Xylene5 = Verified data used for regulatory purposes |
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1000000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Methanol5 = Verified data used for regulatory purposes |
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1000000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Ethyl acetate5 = Verified data used for regulatory purposes |
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257 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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6.31 X 1006 | Calculated | - | |||||||
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6.80 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
High | ||||||||
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Insoluble | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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Regulatory data - observed in metabolism and farm animal feeding studies | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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No dissociation | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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3.9 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Low volatility. If applied directly to plants or soil, drift is a concern & mitigation is advisable | ||||||||
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9.7 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Moderately volatile | ||||||||
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Degradation |
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Not readily biodegradable | ||||||||||
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0.5 | Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source |
Non-persistent | |||||||
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Rapidly converts to MCPA | ||||||||||
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As this parameter is not normally measured directly, a surrogate measure is used: ‘Photochemical oxidative DT₅₀’. Where data is available, this can be found in the Fate Indices section below. | ||||||||||
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Soil adsorption and mobility |
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1.02 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Non-mobile | |||||||
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6172 | ||||||||||
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EU 2022 Dossier Kd range 57.9-178.0 mL g⁻¹, Koc range 2531-16585 mL g⁻¹, Soils =4 | ||||||||||
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Fate indices |
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-0.06 | Calculated | Low leachability | ||||||||||||||||||||||||||
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1.64 X 10-05 | Calculated | - | |||||||||||||||||||||||||
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Low | Calculated | - | ||||||||||||||||||||||||||
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Non-mobile | Calculated | - | ||||||||||||||||||||||||||
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Known soil metabolites |
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Major fraction | - | - |
Known groundwater metabolites |
None
Other known metabolites |
None
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Terrestrial ecotoxicology |
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> 1300 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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Aquatic ecotoxicology |
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0.88 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Lepomis macrochirus5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.28 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Daphnia magna5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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> 1300 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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2000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat5 = Verified data used for regulatory purposes |
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> 5.1 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat 4 hr (nose only)5 = Verified data used for regulatory purposes |
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0.05 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as MCPA5 = Verified data used for regulatory purposes |
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0.15 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as MCPA5 = Verified data used for regulatory purposes |
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0.04 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as MCPA5 = Verified data used for regulatory purposes |
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List II | - | - | ||||||||
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May be absorbed through the skin | |||||||||
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Occupational exposure may occur through inhalation and dermal contact | ||||||||||
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Complete hydrolysis to MCPA, excreted as MCPA | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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Health issues |
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Highly toxic May cause hypotension Possible liver toxicant |
Handling issues |
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IMDG Transport Hazard Class 6.1 Not expected to auto-ignite; Not highly flammable Not explosive or oxidising |
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Health: H302, H312, H332 Environment: H400, H410 |
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II (Moderately hazardous) | |||
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UN3345 | |||
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Packaging Group III (minor danger) | |||
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MCPA-etexyl | ||
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Record last updated: | 22/08/2024 |
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 |