Etridiazole (Ref: Olin 2424) |
![]() Last updated: 19/01/2021 |
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(Also known as: echlomezol; ethazol; athazole; terrazole; OM 2424) |
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A fungicide for soil or compost incorporation to control mainly Phytophthora and Pythium spp. | |
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Phytophthora, Pythium spp.; Damping off; Powdery mildew | |
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Field crops; Vegetables; Ornamentals; Lawns; Tomato and other vegetable seedlings | |
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Current | |
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circa 1972 |
UK regulatory status |
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Not approved | ||
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31/05/2024 | ||
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No UK approval for use |
EC Regulation 1107/2009 (repealing 91/414) |
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Approved | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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31/05/2021 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Australia, USA |
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Chemical structure |
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- | |
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C₅H₅Cl₃N₂OS | |
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CCOC1=NC(=NS1)C(Cl)(Cl)Cl | |
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No data | |
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KQTVWCSONPJJPE-UHFFFAOYSA-N | |
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InChI=1S/C5H5Cl3N2OS/c1-2-11-4-9-3(10-12-4)5(6,7)8/h2H2,1H3 | |
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Yes |
General status |
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Fungicide | |
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Aromatic hydrocarbon | |
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970 g kg⁻¹ | |
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EU dossier - none declared | |
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Synthetic | |
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Contact with protective and curative action. Lipid peroxidation inhibitor. | |
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2593-15-9 | |
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219-991-8 | |
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518 | |
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084701 | |
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17432 | |
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247.53 | |
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5-ethoxy-3-(trichloromethyl)-1,2,4-thiadiazole | |
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ethyl 3-trichloromethyl-1,2,4-thiadiazol-5-yl ether | |
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5-ethoxy-3-(trichloromethyl)-1,2,4-thiadiazole | |
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- | |
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Not applicable | |
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Not applicable | |
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Not applicable | |
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14 | |
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Clear colourless to reddish brown semi-solid | |
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Formulations |
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Often supplied as a wettable powder, emulsifiable concentrate or dust |
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88.9 | 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 |
Moderate | ||||||||
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Miscible | 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 ) Xylene5 = Verified data used for regulatory purposes |
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Miscible | 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 ) Ethanol5 = Verified data used for regulatory purposes |
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Miscible | 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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Miscible | 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 ) Hexane5 = Verified data used for regulatory purposes |
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22 | 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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113 | 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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111 | 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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2.34 X 1003 | Calculated | - | |||||||
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3.37 | 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 |
High | ||||||||
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1.497 | 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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2.77 | 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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Very weak base | |||||||||||
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1430 | 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 |
Highly volatile | ||||||||
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3.02 | 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 |
Moderately volatile | ||||||||
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Maxima 220nm = 5444 | 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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71.9 | 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 ) at 22°C5 = Verified data used for regulatory purposes |
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Degradation |
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20 | M4 M = GLEAMS Model database (Groundwater Loading Effects of Agricultural Management Systems) (click here ) 4 = Verified data |
Non-persistent | |||||||
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8.98 | 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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72.5 | 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 persistent | ||||||||
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EU dossier lab studies range 2.22 (loam) - 45.5 (sandy loam) days, DT₉₀ range 7.4-194 days | ||||||||||
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0.04 | K3 K = Research datasets, e.g. Pandora, Demetra 3 = Unverified data of known source |
Fast | |||||||
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98 | 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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Slightly sensitive to pH: DT₅₀ 92 days at pH 5, 88 days at pH 9 all at 25 °C | ||||||||||
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1.85 | 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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1.31 | 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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- | DW3 DW = Don Wauchope personal database for Pka data: Wauchope, R. D. and Edwards, J. Dissociation constants for pesticide active ingredients: a database and comparison with predicted values. MS in preparation 3 = Unverified data of known source |
Slightly mobile | |||||||
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1000 | ||||||||||
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7.17 | 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 mobile | |||||||
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289 | ||||||||||
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0.873 | ||||||||||
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EU dossier Kf range 5.06-8.24 mL g⁻¹, Kfoc range 195-349 mL g⁻¹, 1/n range 0.84-0.92, Soils=3 | ||||||||||
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No |
Fate indices |
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1.47 | Calculated | Low leachability | ||||||||||||||||||||||||||
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1.86 X 10-02 | Calculated | - | |||||||||||||||||||||||||
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Low | Calculated | - | ||||||||||||||||||||||||||
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Slightly mobile | Calculated | - |
Key metabolites |
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Soil | 0.133 | Major fraction, Relevant | |||||
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Soil | 0.067 | Minor fraction, Relevant |
Other known metabolites |
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5-hydroxymethyl etridiazole | - | Rat | - | - | |||||
5-hydroxyethoxy etridiazole acid | - | Rat | - | - | |||||
N-carbethoxy oxamic acid | - | Rat (Urinary) | - | - | |||||
ethyl (aminocarbamyl) carbamate | - | Rat (Urinary) | - | - | |||||
oxalic acid | - | Rat (Urinary) | - | - | |||||
etridiazole carboxylic acid | - | Rat (Urinary) | - | - | |||||
3-hydroxymethyl etridiazole | - | Rat | - | - |
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165 | 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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> 945 | 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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2.7 | 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 ) Rat5 = Verified data used for regulatory purposes |
High | |||||||
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560 | 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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286 mg kg bw⁻¹ day⁻¹ | 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 ) Anas platyrhynchos3 = Unverified data of known source |
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2.4 | 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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0.12 | 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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3.1 | 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 ) Daphnia magna5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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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 ) 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 ) Americamysis bahia5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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7.3 | 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 ) Lemna gibba5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.3 | 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 ) Pseudokirchneriella subcapitata5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.32 | Q2 Q = Miscellaneous internet resources Unknown species2 = Unverified data of unknown source |
Moderate | ||||||||
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96 | Mortality [Dose: 14.4 kg ha⁻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 ) Aphidius rhopalosiphi adult5 = Verified data used for regulatory purposes |
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96 | Mortality [Dose: 14.4 kg ha⁻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 ) Typhlodromus pyri protonymph5 = Verified data used for regulatory purposes |
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Nitrogen mineralisation: Chronic effect Carbon mineralisation: Chronic effect |
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 Dose: Not stated |
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General |
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High (class III) | - | - | ||||||||
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> 945 | 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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5000 | 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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> 5.7 | 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 ) Rat (nose only)5 = Verified data used for regulatory purposes |
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0.015 | 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 ) Rat SF=1004 = Verified data |
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0.15 | 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 ) Rabbit SF=1004 = Verified data |
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0.03 | 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 ) Dog SF=1004 = Verified data |
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18-30 | 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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Bystanders should be prohibited from entering glasshouses post-application | |||||||||
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PPE/PPC required to minimise exposure | ||||||||||
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0.1 | 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 ) EU Dir 89/778/EC limit; Calc MAC=15.0 µg l⁻¹5 = Verified data used for regulatory purposes |
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Health issues |
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Possible liver toxicant |
Handling issues |
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Not explosive or oxidising IMDG Transport Code is usually 6.1 |
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Health: H302, H317, H351 Environment: H400, H410 |
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Carcinogen category 3: R40 T - Toxic: R23, Xn - Harmful: R21, R22 N - Dangerous for the environment: R50, R53 |
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S1/2, S36/37, S38, S45, S60, S61 | |||
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III (Slightly hazardous) | |||
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Usually 2810 | |||
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Packaging Group II (medium danger) |
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etridiazole | ||
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etridiazole | ||
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Etridiazol | ||
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etridiazole | ||
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etridiazolo | ||
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etridiazol | ||
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etridiazol | ||
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etridiazool |
Record last updated: | 19/01/2021 |
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 |