Hexazinone (Ref: DPX A3674) |
![]() Last updated: 27/11/2019 |
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(Also known as: DPX-3674) |
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A broad-spectrum herbicide used to control many annual, biennial and perennial weeds. | |
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Grasses; Broad-leaved weeds; Woody plants | |
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Fruit; Sugarcane; Alfalfa; Forestry; Pastures; Rangeland; Fallow land | |
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Current | |
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1975, USA |
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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Expired | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Also used in |
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Chemical structure |
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C₁₂H₂₀N₄O₂ | |
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CN1C(=NC(=O)N(C1=O)C2CCCCC2)N(C)C | |
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No data | |
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CAWXEEYDBZRFPE-UHFFFAOYSA-N | |
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InChI=1S/C12H20N4O2/c1-14(2)10-13-11(17)16(12(18)15(10)3)9-7-5-4-6-8-9/h9H,4-8H2,1-3H3 | |
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Yes |
General status |
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Herbicide | |
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Triazinone | |
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Synthetic | |
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Non-selective with contact action, absorbed through the roots and foliage of plants. Inhibits photosynthesis (photosystem II). | |
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51235-04-2 | |
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257-074-4 | |
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374 | |
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107201 | |
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39965 | |
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252.31 | |
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- | |
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3-cyclohexyl-6-dimethylamino-1-methyl-1,3,5-triazine-2,4(1H,3H)-dione | |
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3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4(1H,3H)-dione | |
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Potential groundwater contaminant; Chemical subject to PIC regulations | |
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C1 | |
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5 | |
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Not applicable | |
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Not applicable | |
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Colourless crystals | |
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Formulations |
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Available in a variety of formulations including wettable granules, suspension concentrates and tablets |
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33000 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
High | ||||||||
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626000 | C4 C = AGRITOX (click here ) Acetone4 = Verified data |
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334000 | C4 C = AGRITOX (click here ) Toluene4 = Verified data |
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2146500 | C4 C = AGRITOX (click here ) Methanol4 = Verified data |
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837000 | C4 C = AGRITOX (click here ) Benzene4 = Verified data |
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113.5 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Decomposes on distillation | L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source |
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1.48 X 1001 | Calculated | - | |||||||
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1.17 | P4 P = Other governments and regulators 4 = Verified data |
Low | ||||||||
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1.25 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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2.2 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Weak base | |||||||||||
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0.03 | G4 G = Extension Toxicology network database EXTOXNET (click here ) 4 = Verified data |
Low volatility | ||||||||
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1.10 X 10-07 | H4 H = The US ARS pesticide properties database (click here ) 4 = Verified data |
Non-volatile | ||||||||
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Degradation |
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105 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
Persistent | |||||||
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90 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) 3 = Unverified data of known source |
Moderately persistent | ||||||||
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Other sources: DT₅₀ 30 (sand) - 180 (clay) days (R3); General literature DT₅₀ range 59-64 days (R3) | ||||||||||
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11.3 | R4 R = Peer reviewed scientific publications 4 = Verified data |
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Published literature RL₅₀ range 10.5-12.0 days, 2 field crops, various matrices, n=2 | ||||||||||
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56 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Stable | |||||||
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56 | K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data |
Moderately persistent | |||||||
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Soil adsorption and mobility |
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- | G3 G = Extension Toxicology network database EXTOXNET (click here ) 3 = Unverified data of known source |
Mobile | |||||||
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54 | ||||||||||
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Other sources: Koc 610 (P3) | ||||||||||
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Fate indices |
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4.43 | Calculated | High leachability | ||||||||||||||||||||||||||
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2.15 X 1000 | Calculated | - | |||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Mobile | Calculated | - |
Key metabolites |
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Soil | - | - | |||||
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Soil | - | Major | |||||
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Soil | - | Major |
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7 | P4 P = Other governments and regulators 4 = Verified data |
Low potential | |||||||
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Not available | - | |||||||||
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1690 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Rat4 = Verified data |
Moderate | ||||||||
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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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> 200 | - | |||||||||
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> 2258 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Colinus virginianus4 = Verified data |
Low | ||||||||
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> 320 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Oncorhynchus mykiss4 = Verified data |
Low | ||||||||
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0.0855 | P3 P = Other governments and regulators Salmo salar3 = Unverified data of known source |
Moderate | ||||||||
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> 85 | J4 J = Pesticide Action Network database (click here ) Daphnia magna4 = Verified data |
Moderate | ||||||||
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> 50 | F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Daphnia magna LOEC3 = Unverified data of known source |
Low | ||||||||
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> 0.072 | F2 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Lemna minor 7 day2 = Unverified data of unknown source |
Moderate | ||||||||
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0.0145 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Pseudokirchneriella subcapitata4 = Verified data |
Moderate | ||||||||
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> 100 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents (US EPA Databases Related to Pesticide Risk Assessment ) Apis mellifera4 = Verified data |
Low | |||||||
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60 | L2 L = Pesticide manuals and hard copy reference books / other sources 2 = Unverified data of unknown source |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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1690 | G4 G = Extension Toxicology network database EXTOXNET (click here ) Rat4 = Verified data |
Moderate | ||||||||
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5000 | L3 L = Pesticide manuals and hard copy reference books / other sources Rabbit3 = Unverified data of known source |
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7.48 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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0.05 | L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source |
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Health issues |
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Highly toxic |
Handling issues |
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No information available | |||
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Health: H302, H319 Environment: H400, H410 |
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Xn - Harmful: R22 Xi - Irritant: R36 N - Dangerous for the environment: R50, R53 |
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S2, S60, S61 | |||
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II (Moderately hazardous) | |||
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hexazinone | ||
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hexazinone | ||
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Hexazinon | ||
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hexazinon | ||
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esazinone | ||
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hexazinona | ||
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heksazynon | ||
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hexazinone | ||
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Record last updated: | 27/11/2019 |
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 |