Diafenthiuron (Ref: CGA 106630) |
![]() Last updated: 11/01/2021 |
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(Also known as: CG 167; CGA 106630 ) |
SUMMARY |
Diafenthiuron is an insecticide and acaricide without regulatory approval for use in the EU. It has a low aqueous solubility but is readily soluble in many organic solvents. It is volatile and, based on its chemical properties, it is unlikely to leach to groundwater. It is not persistent in most soil systems but may be very persistent in aquatic systems. It has a low mammalian toxicity but is moderate to highly toxic for most biodiversity including aquatic life, bees and worms. |
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An insecticide and acaricide effective against phytophagous mites and other sucking pests | |
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Aphids; Whiteflies; Spidermites; Diamondback moth; thrips; Jassids | |
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Cotton; Fruit trees; Ornamentals; Soybeans | |
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- | |
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Current | |
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1988, first reported; 1990, first marketed |
UK regulatory status |
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Not approved | ||
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Not applicable | ||
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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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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Not applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Australia, Asia Pacific, Latin America |
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Chemical structure |
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None | |
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C₂₃H₃₂N₂OS | |
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CC(C)C1=CC(=CC(=C1NC(=S)NC(C)(C)C)C(C)C)OC2=CC=CC=C2 | |
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No data | |
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WOWBFOBYOAGEEA-UHFFFAOYSA-N | |
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InChI=1S/C23H32N2OS/c1-15(2)19-13-18(26-17-11-9-8-10-12-17)14-20(16(3)4)21(19)24-22(27)25-23(5,6)7/h8-16H,1-7H3,(H2,24,25,27) | |
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Yes |
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Common Name | Relationship | Link |
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diafenthiuron | - | ![]() |
General status |
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Insecticide, Acaricide, Miticide | |
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Thiourea | |
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- | |
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Synthetic | |
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Broad spectrum, contact and stomach action with some ovicidal activity, acts by inhibiting oxidative phosphorylation | |
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80060-09-9 | |
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- | |
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8097 | |
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- | |
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3034380 | |
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384.58 | |
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N-tert-butyl-N'-[2,6-di(propan-2-yl)-4-phenoxyphenyl]carbonothioic diamide | |
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1-tert-butyl-3-(2,6-diisopropyl-4-phenoxyphenyl)thiourea | |
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N-(2,6-bis(1-methylethyl)-4-phenoxyphenyl)-N'-(1,1-dimethylethyl)thiourea | |
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PAN Listed as Highly Hazardous Chemical | |
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- | |
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Not applicable | |
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Not applicable | |
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12A | |
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Not applicable | |
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None identified | |
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White powder |
Formulations |
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Often supplied as suspension concentrates or wettable powders |
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0.06 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Low | ||||||||
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43000 | L3 L = Pesticide manuals and hard copy reference books / other sources Ethanol3 = Unverified data of known source |
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320000 | L3 L = Pesticide manuals and hard copy reference books / other sources Acetone3 = Unverified data of known source |
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33000 | L3 L = Pesticide manuals and hard copy reference books / other sources Toluene3 = Unverified data of known source |
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9600 | L3 L = Pesticide manuals and hard copy reference books / other sources n-Hexane3 = Unverified data of known source |
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146 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 4 = Verified data |
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Not expected to self ignite; Not highly flammable | - | - | ||||||||
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5.75 X 1005 | Calculated | - | |||||||
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5.76 | Z3 Z = Kingtai Chemials website (click here ) 3 = Unverified data of known source |
High | ||||||||
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1.09 | Z3 Z = Kingtai Chemials website (click here ) 3 = Unverified data of known source |
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Not applicable | Z3 Z = Kingtai Chemials website (click here ) 3 = Unverified data of known source |
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No dissociation | |||||||||||
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0.002 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 4 = Verified data |
Low volatility | ||||||||
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1.28 X 10-02 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 4 = Verified data |
Non-volatile | ||||||||
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Degradation |
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0.5 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Non-persistent | |||||||
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Best available data suggests DT₅₀ 1 hour to 1.5 days (Z3) | ||||||||||
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3.1 | R3 R = Peer reviewed scientific publications 3 = Unverified data of known source |
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Chinese cabbage leaves, undercover, n=1 | ||||||||||
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3.0 | R4 R = Peer reviewed scientific publications 4 = Verified data |
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Published literature RL₅₀ range 2.4-4.3 days, 3.0 field & undercover grown crops, various matrices, n=3 | ||||||||||
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Stable to UV light | ||||||||||
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Stable | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Stable | |||||||
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pH variable: 4 years at pH 5, 451 days at pH 7, 796 days at pH 9, all at 20 °C | ||||||||||
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Soil adsorption and mobility |
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- | Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source |
Non-mobile | |||||||
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43546 | ||||||||||
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Estimated | ||||||||||
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Fate indices |
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0.19 | Calculated | Low leachability | ||||||||||||||||||||||||||
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5.35 X 10-03 | Calculated | - | |||||||||||||||||||||||||
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Estimated concentrations of chemicals with Koc values greater than 9995 ml g⁻¹ are beyond the scope of the regression data used in SCI-GROW development. If there are concerns for such chemicals, a higher tier groundwater exposure assessment should be considered, regardless of the concentration returned by SCI-GROW | ||||||||||||||||||||||||||||
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Low | Calculated | - | ||||||||||||||||||||||||||
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Non-mobile | Calculated | - |
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2068 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
Low | ||||||||
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- | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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1500 | L3 L = Pesticide manuals and hard copy reference books / other sources Anas platyrhynchos3 = Unverified data of known source |
Moderate | ||||||||
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0.0007 | L3 L = Pesticide manuals and hard copy reference books / other sources Oncorhynchus mykiss3 = Unverified data of known source |
High | ||||||||
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> 0.5 | L3 L = Pesticide manuals and hard copy reference books / other sources Daphnia magna3 = Unverified data of known source |
Moderate | ||||||||
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1.5 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Moderate | |||||||
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1000 | Z2 Z = Kingtai Chemials website (click here ) 2 = Unverified data of unknown source |
Moderate | ||||||||
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Moderately harmful | [Dose: 500 g ha⁻¹] AA3 AA = IOBC Database on classification of side effects to beneficial organisms, 2005 Aphidius rhopalosiphi3 = Unverified data of known source |
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Harmless | [Dose: 500 g ha⁻¹] AA3 AA = IOBC Database on classification of side effects to beneficial organisms, 2005 Typhlodromus pyri3 = Unverified data of known source |
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General |
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High (class III) | - | - | ||||||||
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2068 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
Low | ||||||||
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2000 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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0.558 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat 4 hr3 = Unverified data of known source |
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Acute percutaneous LD₅₀ > 2000 mg kg⁻¹ | E4 E = Manufacturers safety data sheets Rat4 = Verified data |
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0.003 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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PPC/PPE required to mitigate exposure risks | ||||||||||
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Health issues |
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Toxic if swallowed or inhaled Probable kidney toxicant |
Handling issues |
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Non-corrosive | |||
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Health: H373, H370, H330, H319, H302 Environment: H400, H410 |
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T - Toxic: R23 Xn - Harmful: R48/21/22 N - Dangerous for the environment: R50, R53 |
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III (Slightly hazardous) | |||
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diafenthiuron | ||
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diafenthiuron | ||
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Diafenthiuron | ||
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diafenthiuron | ||
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diafentiuron | ||
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diafentiuron | ||
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diafentiuron | ||
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Record last updated: | 11/01/2021 |
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 |