4-(4-hydroxyphenoxy)phenyl (RS)-2-(2-pyridyloxy)propyl ether |
Last updated: 09/01/2023 |
(Also known as: 4-OH-pyr; 4-OH-pyriproxyfen) |
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Chemical transformation product | |
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Not applicable | |
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Approval status |
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Chemical structure |
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Yes |
General status |
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Soil, Surface water, Sediment | |
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Unclassified substance | |
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Synthetic | |
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Not applicable | |
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337.4 | |
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4-(4-hydroxyphenoxy)phenyl (RS)-2-(2-pyridyloxy)propyl ether | |
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Can be a metabolite of: |
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pyriproxyfen | Soil | 0.063 | Minor fraction |
Formulations |
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1.4 | A3 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 ) 3 = Unverified data of known source |
Low | ||||||||
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Degradation |
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38 | 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 persistent | |||||||
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38 | 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 persistent | ||||||||
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102 | 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 |
Persistent | ||||||||
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EU dossier lab studies DT₅₀ range 28-47 days, DT₉₀ range 78-157 days | ||||||||||
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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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21.9 | 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 |
Slightly mobile | |||||||
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2598 | ||||||||||
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0.873 | ||||||||||
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EU dossier Kf range 11.5-32.8 mL g⁻¹, Kfoc range 921-3811 mL g⁻¹, Soils=3 | ||||||||||
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Fate indices |
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0.92 | Calculated | Low leachability | ||||||||||||||||||||||||||
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Known metabolites |
None
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Terrestrial ecotoxicology |
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> 2000 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment ) Rat3 = Unverified data of known source |
Low | ||||||||
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Aquatic ecotoxicology |
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> 0.27 | 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 ) Oncorhynchus mykiss5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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1.8 | 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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> 2.5 | 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 ) Pseudokirchneriella subcapitata5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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General |
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> 2000 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment ) Rat3 = Unverified data of known source |
Low | ||||||||
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Health issues |
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Handling issues |
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Not listed (Not listed) | |||
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4-(4-hydroxyphenoxy)phenyl (RS)-2-(2-pyridyloxy)propyl ether | ||
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Record last updated: | 09/01/2023 |
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 |