Pyroxasulfone (Ref: KIH-485) |
![]() Last updated: 30/11/2018 |
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(Not known by any other names) |
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A new selective, experimental pre-emergence grass and broad-leaved weed herbicide | |
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Foxtail; Nutsedge; Lambsquarters; Velvetleaf; Ragweed; Pigweed | |
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Corn; Wheat; Soybean | |
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Current | |
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2005 |
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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Chemical structure |
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C₁₂H₁₄F₅N₃O₄S | |
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CC1(CC(=NO1)S(=O)(=O)CC2=C(N(N=C2C(F)(F)F)C)OC(F)F)C | |
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No data | |
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CASLETQIYIQFTQ-UHFFFAOYSA-N | |
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InChI=1S/C12H14F5N3O4S/c1-11(2)4-7(19-24-11)25(21,22)5-6-8(12(15,16)17)18-20(3)9(6)23-10(13)14/h10H,4-5H2,1-3H3 | |
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Yes |
General status |
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Herbicide | |
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Pyrazolium | |
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Synthetic | |
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Inhibition of very-long-chain fatty acid elongase (VLCFAE) | |
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447399-55-5 | |
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090099 | |
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11556910 | |
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391.32 | |
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3-{[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methanesulfonyl}-5,5-dimethyl-4,5-dihydro-1,2-oxazole | |
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3-[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-ylmethylsulfonyl]-4,5-dihydro-5,5-dimethyl-1,2-oxazole | |
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3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethylisoxazole | |
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K3 | |
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15 | |
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Not applicable | |
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Not applicable | |
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White crystalline solid with slight characteristic odour |
Formulations |
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3.49 | E4 E = Manufacturers safety data sheets 4 = Verified data |
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130.7 | E4 E = Manufacturers safety data sheets 4 = Verified data |
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2.45 X 1002 | Calculated | - | |||||||
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2.39 | E3 E = Manufacturers safety data sheets at 25 °C3 = Unverified data of known source |
Low | ||||||||
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1.600 | E4 E = Manufacturers safety data sheets 4 = Verified data |
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2.4 X 10-03 | E4 E = Manufacturers safety data sheets at 25 °C4 = Verified data |
Low volatility | ||||||||
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Degradation |
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22 | E4 E = Manufacturers safety data sheets 4 = Verified data |
Non-persistent | |||||||
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22 | E4 E = Manufacturers safety data sheets 4 = Verified data |
Non-persistent | ||||||||
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Manufacters data DT₅₀ field range 16-26 days | ||||||||||
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Soil adsorption and mobility |
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- | E4 E = Manufacturers safety data sheets 4 = Verified data |
Moderately mobile | |||||||
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Manufacturers data Koc range 119-226 mL g⁻¹ | ||||||||||
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Fate indices |
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2.22 | Calculated | Transition state | ||||||||||||||||||||||||||
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8.75 X 10-02 | Calculated | - | |||||||||||||||||||||||||
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Low | Calculated | - | ||||||||||||||||||||||||||
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Moderately mobile | Calculated | - |
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> 2000 | E4 E = Manufacturers safety data sheets Rat4 = Verified data |
Low | ||||||||
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> 2250 | E4 E = Manufacturers safety data sheets Colinus virginianus4 = Verified data |
Low | ||||||||
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> 2.2 | E4 E = Manufacturers safety data sheets Oncorhynchus mykiss4 = Verified data |
Moderate | ||||||||
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> 4.4 | E4 E = Manufacturers safety data sheets Daphnia magna4 = Verified data |
Moderate | ||||||||
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0.00038 | E4 E = Manufacturers safety data sheets Pseudokirchneriella subcapitata4 = Verified data |
High | ||||||||
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> 100 | E4 E = Manufacturers safety data sheets 4 = Verified data |
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> 997 | E4 E = Manufacturers safety data sheets Eisenia foetida4 = Verified data |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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> 2000 | E4 E = Manufacturers safety data sheets Rat4 = Verified data |
Low | ||||||||
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2000 | E4 E = Manufacturers safety data sheets Rat4 = Verified data |
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> 6.56 | E4 E = Manufacturers safety data sheets Rat4 = Verified data |
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Health issues |
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Possible liver, urinary bladder and cadiovascular toxicant USEPA - possible human carcinogen at high doses |
Handling issues |
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No information available | |||
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None allocated at this time | |||
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Carcinogen category 2: R45 T - Toxic: R22 Xi - Iritant: R38 N - Dangerous for the environment: R50/53 |
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NL (Not listed) | |||
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pyroxasulfone | ||
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Record last updated: | 30/11/2018 |
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 |