Dimethipin (Ref: N 252) |
Last updated: 23/08/2024 |
(Also known as: UNI N252 ; oxidimethiin; oxydimethiin; tetrathiin) |
SUMMARY |
Dimethipin is a plant growth regulator and defoliant. It is highly soluble in water and has a low volatility. Depending on local conditions it may be persistent in both soil and water systems. It also has potential to leach to groundwater. Dimethipin is moderately toxic to aquatic species (except algae), birds, earthworms and honeybees. This substance also has a moderate oral mammalian toxicity, is an irritant and skin sensitizer. There is also the suggestion that it is a carcinogen. |
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 plant growth regulator and defoliant used on a range of crops | |
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Growth | |
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Potatoes; Cotton; Rubber trees; Nursery stock | |
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- | |
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Current | |
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1974, first reported |
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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Greece | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Expired | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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- | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Additional information |
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Australia, USA |
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Chemical structure |
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None | |
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C₆H₁₀O₄S₂ | |
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CC1=C(S(=O)(=O)CCS1(=O)=O)C | |
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No data | |
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PHVNLLCAQHGNKU-UHFFFAOYSA-N | |
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InChI=1S/C6H10O4S2/c1-5-6(2)12(9,10)4-3-11(5,7)8/h3-4H2,1-2H3 | |
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Yes |
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Common Name | Relationship | Link |
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dimethipin | - |
General status |
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Herbicide, Plant Growth Regulator | |
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Sulfone PGR | |
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965 g kg⁻¹ | |
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EU dossier - None declared | |
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Synthetic | |
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Interferes with protein synthesis in the plant epidermis, functions by stressing the plant’s stomatal system causing it to lose water and defoliate/desiccate. | |
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55290-64-7 | |
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259-572-7 | |
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689 | |
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118901 | |
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41385 | |
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No data found | |
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210.27 | |
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5,6-dimethyl-2,3-dihydro-1γ6,4γ6-dithiine-1,1,4,4-tetrone | |
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2,3-dihydro-5,6-dimethyl-1,4-dithiine 1,1,4,4-tetraoxide | |
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2,3-dihydro-5,6-dimethyl-1,4-dithiin 1,1,4,4-tetraoxide | |
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- | |
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- | |
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Z | |
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0 | |
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Not applicable | |
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Not applicable | |
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- | |
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White crystalline solid |
Formulations |
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Often available as a suspension concentrate that is diluted with water and used as a spray |
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1843 | 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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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 ) Heptane5 = Verified data used for regulatory purposes |
- | ||||||||
3600 | 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 |
- | |||||||||
10000 | 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 |
- | |||||||||
122000 | 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 |
- | |||||||||
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168 | 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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- | - | - | ||||||||
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- | - | - | ||||||||
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6.76 X 10-01 | Calculated | - | |||||||
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-0.17 | 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 |
Low | ||||||||
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- | - | - | |||||||
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- | - | - | ||||||||
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1.59 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
- | ||||||||
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10.9 | 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 |
- | ||||||||
Very weak acid | |||||||||||
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0.051 | 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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2.33 X 10-11 | 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-volatile | ||||||||
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- | - | - | |||||||
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- | - | - | ||||||||
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No maxima detected | 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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68.7 | 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 ) at 20°C5 = Verified data used for regulatory purposes |
- |
Degradation |
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- | ||||||||||
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183 | 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 |
Persistent | |||||||
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431 | 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 |
Very persistent | ||||||||
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183 | 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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1025 | 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 |
Very persistent | ||||||||
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932 | 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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EU dossiers lab studies DT₅₀ range 157-673 days, DT₉₀ range 521-2236 days, field studies 2 soils DT₅₀ range 168-198 days USA, DT₉₀ range 658-1206 days | ||||||||||
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330 | 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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- | ||||||||||
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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 at pH 5 to pH 9 at 22 °C | ||||||||||
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- | - | - | ||||||||
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470 | 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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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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- | 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 |
Very mobile | |||||||
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2.0 | ||||||||||
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EU dossier Koc range 1.0 (sand/loam) - 3.2 (clay) mL g⁻¹; Other sources: 10 mL g⁻¹ (DW3) | ||||||||||
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0.12 | R4 R = Peer reviewed scientific publications 4 = Verified data |
Very mobile | |||||||
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4.6 | ||||||||||
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1.02 | ||||||||||
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2 USA/Canadian soils. Kf range 0.04-0.2, Kfoc range 2.7-7.1, 1/n range1.02-1.03, Soils=2 | ||||||||||
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No |
Fate indices |
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7.55 | Calculated | High leachability | ||||||||||||||||||||||||||
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7.11 X 1001 | Calculated | - | |||||||||||||||||||||||||
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- | ||||||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Very mobile | Calculated | - | ||||||||||||||||||||||||||
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- | - | - | ||||||||||||||||||||||||||
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4.3 | 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 ) 5 = Verified data used for regulatory purposes |
Low potential | |||||||||||||||||||||||||
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Not available | - |
Known soil and groundwater metabolites |
None
Other known metabolites |
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cysteinyl-glycine | - | Rat (Urine) | - | ||||
- | N-acetyl-cysteinyl conjugates | Rat (Urine) | - |
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Terrestrial ecotoxicology |
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458 | 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 | L2 L = Pesticide manuals and hard copy reference books / other sources Rat 2 yr2 = Unverified data of unknown source |
High | |||||||
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896 | 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 ) Anas platyrhynchos5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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1173 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 ) Anas platyrhynchos5 = Verified data used for regulatory purposes |
- | ||||||||
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- | - | - | ||||||||
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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 ) Eisenia foetida5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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2.17 | 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 ) Eisenia foetida 56 day5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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Nitrogen mineralisation: Chronic effect Biopolymer degradation: Chronic effect |
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 Dose: Not stated 63 Day |
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231 | 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 ) Folsomia candida5 = Verified data used for regulatory purposes |
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100 | 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 ) Apis mellifera5 = Verified data used for regulatory purposes |
Moderate | |||||||
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64.7 | 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 ) Apis mellifera5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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> 937.5 | 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 ) Aphidius rhopalosiphi5 = Verified data used for regulatory purposes |
- | ||||||||
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600 | 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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52.8 | 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 ) Oncorhynchus mykiss5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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3.3 | 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 ) Oncorhynchus mykiss5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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14.02 | 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 ) Danio rerio EC₅₀ Embryo3 = Unverified data of known source |
Moderate | ||||||||
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29.9 | 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 ) Daphnia magna5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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0.61 | 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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11.8 | 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 |
Moderate | ||||||||
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2.1 | 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 ) Lemna gibba5 = Verified data used for regulatory purposes |
Moderate | ||||||||
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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 ) Scenedesmus subspicatus5 = Verified data used for regulatory purposes |
Low | ||||||||
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General |
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High (class III) | - | - | ||||||||
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458 | 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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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 ) Rat (nose only)5 = Verified data used for regulatory purposes |
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No unacceptable risks to bystanders identified Negligible risk of dietary exposure |
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Risk of exposure acceptable under label recommendations for use for personal protection clothing and equipment | ||||||||||
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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=27.0 µg l⁻¹5 = Verified data used for regulatory purposes |
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Health issues |
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US EPA - possible human carcinogen |
Handling issues |
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Not oxidising or explosive Not expected to auto-ignite; Not highly flammable |
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Health: H302 | |||
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II (Moderately hazardous) | |||
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Not regulated | |||
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- | |||
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Chemically stable under standard ambient conditions |
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dimethipin | ||
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dimethipin | ||
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Dimethipin | ||
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dimethipin | ||
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dimetipin | ||
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dimetipin | ||
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- | ||
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dimetypina | ||
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dimethipin | ||
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- |
Record last updated: | 23/08/2024 |
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 |