Pyriproxyfen (Ref: S 9318) |
![]() Last updated: 10/09/2023 |
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(Also known as: pyriproxifen) |
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.
Environmental fate | Ecotoxicity | Human health |
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Used mainly for flea control on domestic pets. | |
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Current | |
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1995, first registered for agricultural use Japan | |
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Cats, Dogs |
Chemical structure |
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A molecule with one chiral centre. The technical material is an isomeric mixture. | |
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C₂₀H₁₉NO₃ | |
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CC(COC1=CC=C(C=C1)OC2=CC=CC=C2)OC3=CC=CC=N3 | |
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- | |
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NHDHVHZZCFYRSB-UHFFFAOYSA-N | |
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InChI=1S/C20H19NO3/c1-16(23-20-9-5-6-14-21-20)15-22-17-10-12-19(13-11-17)24-18-7-3-2-4-8-18/h2-14,16H,15H2,1H3 | |
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Yes |
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Common Name | Relationship | Link |
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pyriproxyfen | - | ![]() |
General status |
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Insecticide | |
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Juvenile hormone mimic insecticide | |
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970 g kg⁻¹ racemic mixture | |
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EU dossier - toluene 5g kg⁻¹ | |
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Synthetic | |
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A juvenile hormone mimic. Inhibits insect maturation process | |
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- | |
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95737-68-1 | |
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429-800-1 | |
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715 | |
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129032 | |
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91753 | |
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613-303-00-3 | |
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QP53AC54 | |
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Antiparasitic products, insecticides & repellents: Ecoparasiticides, insecticides & repellents | |
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No | |
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No data | |
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321.37 | |
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- | |
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4-phenoxyphenyl (RS)-2-(2-pyridyloxy)propyl ether | |
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2-(1-methyl-2-(4-phenoxyphenoxy)ethoxy)pyridine | |
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- | |
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- | |
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White granule solid |
Formulations |
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Fleeguard Spot-On Solution | Bayer plc | UK National authorisation | Prescription only medicine to be authorised by a veterinarian (POM-V) | ||||||
Duowin Cutaneous Spray Solution | Virbac S.A. | EU Mutually recognised procedure | Prescription only medicine to be authorised by a veterinarian (POM-V) | |||||||
Fleegard 4 mg for Cats spot-on solution | Bayer plc | UK National authorisation | Prescription only medicine to be authorised by a veterinarian (POM-V) | |||||||
Bob Martin Vetcare Spot-On 10 % for Cats and Kittens | Alfamed S.A.S. | UK National authorisation (IC) | Authorised veterinary medicine for general sale (AVM - GSL) | |||||||
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Usually supplied as an emulsifiable concentrate that is mixed with water and applied as a spray for crops. Also available as bait and wettable powders. |
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0.37 | 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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27000 | 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 |
- | ||||||||
27000 | 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 |
- | |||||||||
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 ) Acetone5 = Verified data used for regulatory purposes |
- | |||||||||
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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49 | 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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318 | 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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318 | 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 |
- | ||||||||
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- | - | - | ||||||||
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2.34 X 1005 | Calculated | - | |||||||
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5.37 | B4 B = UK CRD and ACP Evaluation Documents / and other DEFRA (UK) documents; Also Chemicals Regulation Division, Health and Safety Executive (HSE), UK (click here ) 4 = Verified data |
High | ||||||||
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Soluble | 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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1.26 | 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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6.87 | A4 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 ) 4 = Verified data |
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Weak acid | |||||||||||
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1.33 X 10-02 | 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 |
Low volatility | ||||||||
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1.16 X 10-02 | A2 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 ) 2 = Unverified data of unknown source |
Non-volatile | ||||||||
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Neutral solution 271nm = 6649 Acidic solution 278nm = 10354 Basic solution 271nm = 6749 |
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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- | - | - | ||||||||
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1.5823 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Degradation |
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10 | 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-persistent | |||||||
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6.7 | 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 |
Non-persistent | ||||||||
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4.2 | 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-persistent | ||||||||
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24.5 | 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 ) 5 = Verified data used for regulatory purposes |
Non-persistent | ||||||||
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14.7 | 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 |
- | ||||||||
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EU dossier lab studies DT₅₀ range 2.8-20.4 days, DT₉₀ range 9.2-54 days; Field studies DT₅₀ range 3.5-5.9 days, DT₉₀ range 12-20 days | ||||||||||
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- | - | - | ||||||||
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11.5 | 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 ) 5 = Verified data used for regulatory purposes |
Moderately fast | |||||||
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Natural light, 43N | ||||||||||
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Stable | 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 |
Stable | |||||||
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Stable pH 4 to pH 9, 50 °C | ||||||||||
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6.5 | 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 ) 5 = Verified data used for regulatory purposes |
Fast | ||||||||
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1.6 | 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 fast |
Soil adsorption and mobility |
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- | - | - | |||||||
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- | ||||||||||
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227 | 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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21175 | ||||||||||
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1.15 | ||||||||||
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EU dossier Kf range 126-324 mL g⁻¹, Kfoc range 11000-34200 mL g⁻¹, 1/n range 1.1-1.2, Soils=4 | ||||||||||
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No |
Fate indices |
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-0.20 | Calculated | Low leachability | ||||||||||||||||||||||||||
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1379 | 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 |
Threshold for concern | |||||||||||||||||||||||||
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0.9 | - |
Known soil metabolites |
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Minor fraction | 0.063 | - | |||||
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Minor fraction | 0.086 | - | |||||
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Minor fraction | 0.020 | - |
Known groundwater metabolites |
None
Other known metabolites |
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4-hydroxyphenyl (RS)-2-(2-pyridyloxy)propyl ether Note: Koc = 10mL/g; DT50 ~ 1000 days (industry data) |
DPH-pyr | Surface water | - | - | |||||
(RS)-2-hydroxypropyl 4-phenoxyphenyl ether | POPA | Plant | - | - | |||||
2-hydroxypyridin | 2-OH-PY | Plant | - | - | |||||
(RS)-2-(2-pyridyloxy)propyl alcohol | PYPA | Plant | - | - |
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Terrestrial ecotoxicology |
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> 5000 | B5 B = UK CRD and ACP Evaluation Documents / and other DEFRA (UK) documents; Also Chemicals Regulation Division, Health and Safety Executive (HSE), UK (click here ) Rat5 = Verified data used for regulatory purposes |
Low | ||||||||
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> 24 | B3 B = UK CRD and ACP Evaluation Documents / and other DEFRA (UK) documents; Also Chemicals Regulation Division, Health and Safety Executive (HSE), UK (click here ) Rat 6 month3 = Unverified data of known source |
High | |||||||
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> 400 | - | |||||||||
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- | - | - | ||||||||
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> 1906 | 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 ) Colinus virginianus5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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> 863 mg kg bw⁻¹ day⁻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 ) Colinus virginianus5 = Verified data used for regulatory purposes |
- | ||||||||
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- | - | - | ||||||||
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> 500 | 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 ) Eisenia foetida corr5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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74 | A4 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 ) Apis mellifera4 = Verified data |
Moderate | |||||||
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> 100 | A4 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 ) Apis mellifera4 = Verified data |
Low | ||||||||
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> 225 | 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 ) Chrysoperla carnea5 = Verified data used for regulatory purposes |
- | ||||||||
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213 | 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 ) Aphidius rhopalosiphi5 = Verified data used for regulatory purposes |
- | ||||||||
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20 | 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 ) Typhlodromus pyri5 = Verified data used for regulatory purposes |
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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 ) Lepomis macrochirus5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.0043 | 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 |
High | ||||||||
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0.4 | B5 B = UK CRD and ACP Evaluation Documents / and other DEFRA (UK) documents; Also Chemicals Regulation Division, Health and Safety Executive (HSE), UK (click here ) Daphnia magna5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.000015 | 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 |
High | ||||||||
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0.047 | 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 ) Americamysis bahia3 = Unverified data of known source |
High | ||||||||
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- | - | - | ||||||||
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0.01 | 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 ) Chironomus riparius emergence5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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- | - | - | ||||||||
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> 0.18 | 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 ) Lemna gibba5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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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 ) Selenastrum capricornutum5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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- | - | - | ||||||||
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0.005 | 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 ) Aquatic community5 = Verified data used for regulatory purposes |
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General |
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High (class III) | - | - | ||||||||
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> 5000 | B5 B = UK CRD and ACP Evaluation Documents / and other DEFRA (UK) documents; Also Chemicals Regulation Division, Health and Safety Executive (HSE), UK (click here ) Rat5 = Verified data used for regulatory purposes |
Low | ||||||||
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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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> 1.3 | 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 (whole body)5 = Verified data used for regulatory purposes |
- | ||||||||
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- | - | - | ||||||||
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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 ) 5 = Verified data used for regulatory purposes |
- | ||||||||
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1.0 | 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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- | - | - | ||||||||
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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 ) 5 = Verified data used for regulatory purposes |
- | ||||||||
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2.5-13 | 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 ) concentration dependent5 = Verified data used for regulatory purposes |
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No unacceptable risks to bystanders identified with proposed uses | |||||||||
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No unacceptable risks to operators or other workers identified for poposed uses | ||||||||||
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Rapidly metabolised and excreted via faeces and urine | R3 R = Peer reviewed scientific publications 3 = Unverified data of known source |
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Health issues |
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Possible liver toxicant Possible blood toxicant Endocrine issues - Estrogenic effect |
Handling issues |
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Not explosive or oxidising IMDG Transport Hazard Class 9 Not expected to auto-ignite; Not highly flammable |
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Environment: H400, H410 | |||
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U (Unlikely to present an acute hazard) | |||
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UN3077 | |||
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Packaging Group III (minor danger) | |||
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pyriproxyfen | ||
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pyriproxyfen | ||
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Pyriproxyfen | ||
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pyriproxyfen | ||
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piriproxifen | ||
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piriproxifen | ||
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pyriproksyfen | ||
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pyriproxyfen | ||
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piriproxifen | ||
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pyriproxyfen | ||
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Record last updated: | 10/09/2023 |
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 |