Dimethirimol (Ref: PP675) |
![]() Last updated: 14/01/2021 |
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(Also known as: dimethyrimol) |
SUMMARY |
Dimethirimol is a fungicide without regulatory approval for use in the EU. It has a high aqueous solubility and is quite volatile. Based on its chemical properties, it is may leach to groundwater. It can be persistent in soil systems. Dimethirimol has a low mammalian toxicity. It is moderately toxic to birds and fish. |
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An eradicant fungicide used in a variety of situations including glasshouses mainly to control powdery mildew | |
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Powdery mildew | |
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Curcubits; Tobacco; Tomatoes; Barley seed; Cucumbers; Ornamentals | |
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Current | |
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1968, first reported;1970, first marketed |
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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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Expired | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Australia |
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Chemical structure |
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C₁₁H₁₉N₃O | |
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CCCCC1=C(NC(=NC1=O)N(C)C)C | |
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No data | |
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CJHXCRMKMMBYJQ-UHFFFAOYSA-N | |
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InChI=1S/C11H19N3O/c1-5-6-7-9-8(2)12-11(14(3)4)13-10(9)15/h5-7H2,1-4H3,(H,12,13,15) | |
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Yes |
General status |
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Fungicide | |
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Pyrimidinol | |
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Synthetic | |
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Systemic, ergosterol biosynthesis inhibitor. Nucleic acid synthesis - adenosin-deaminase. | |
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5221-53-4 | |
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226-021-7 | |
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245 | |
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228200 | |
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21290 | |
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209.29 | |
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5-butyl-2-(dimethylamino)-6-methylpyrimidin-4-ol | |
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5-butyl-2-dimethylamino-6-methylpyrimidin-4-ol | |
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5-butyl-2-(dimethylamino)-6-methyl-4(1H)-pyrimidinone | |
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Not applicable | |
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Not applicable | |
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Not applicable | |
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8 | |
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Colourless needle-shaped crystals |
Formulations |
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Usually supplied as an aqueous liquid or as a concentrate for dilution. |
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1200 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
High | ||||||||
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1200000 | L3 L = Pesticide manuals and hard copy reference books / other sources Chloroform3 = Unverified data of known source |
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360000 | L3 L = Pesticide manuals and hard copy reference books / other sources Xylene3 = Unverified data of known source |
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65000 | L3 L = Pesticide manuals and hard copy reference books / other sources Ethanol3 = Unverified data of known source |
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45000 | L3 L = Pesticide manuals and hard copy reference books / other sources Acetone3 = Unverified data of known source |
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102 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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7.94 X 1001 | Calculated | - | |||||||
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1.9 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
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1.07 | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
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1.46 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Low volatility | ||||||||
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2.55 X 10-04 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Non-volatile | ||||||||
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Degradation |
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120 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Persistent | |||||||
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Best available data | ||||||||||
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Soil adsorption and mobility |
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- | H3 H = The US ARS pesticide properties database (click here ) 3 = Unverified data of known source |
Moderately mobile | |||||||
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90 | ||||||||||
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Best available data | ||||||||||
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Fate indices |
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4.25 | Calculated | High leachability | ||||||||||||||||||||||||||
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1.78 X 1000 | Calculated | - | |||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Moderately mobile | Calculated | - |
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Low risk | Q3 Q = Miscellaneous internet resources Based on LogP < 33 = Unverified data of known source |
Low risk | |||||||
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2350 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Rat4 = Verified data |
Low | ||||||||
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- | L2 L = Pesticide manuals and hard copy reference books / other sources Rat 2 year2 = Unverified data of unknown source |
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300 | - | |||||||||
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> 4000 | L3 L = Pesticide manuals and hard copy reference books / other sources Gallus gallus3 = Unverified data of known source |
Low | ||||||||
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42 | L3 L = Pesticide manuals and hard copy reference books / other sources Salmo trutta3 = Unverified data of known source |
Moderate | ||||||||
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Non-toxic | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Non-toxic | ||||||||
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General |
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High (class III) | - | - | ||||||||
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2350 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Rat4 = Verified data |
Low | ||||||||
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400 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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Health issues |
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No further information available |
Handling issues |
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No information available | |||
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Health: H302, H311 Environment: H412 |
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Not classified: Obsolete | |||
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Not classified: Obsolete | |||
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III/O (Slightly hazardous / Obsolete substance) | |||
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dimethirimol | ||
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dimethirimol | ||
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Dimethirimol | ||
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dimethirimol | ||
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dimetirimol | ||
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dimetirimol | ||
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dimetirimol | ||
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Record last updated: | 14/01/2021 |
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 |