Pyrazolynate |
![]() Last updated: 31/05/2018 |
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(Also known as: pyrazolate) |
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An obsolete herbicide that was used to control weeds in paddy fields | |
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Broad-leaved weeds including arrowhead (sagittaria trifolium) and water plantain (Alisma canalicatum); Grassy weeds; Sedges | |
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Paddy rice | |
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Obsolete | |
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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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Also used in |
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Japan |
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Chemical structure |
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C₁₉H₁₆Cl₂N₂O₄S | |
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CC1=CC=C(C=C1)S(=O)(=O)OC2=C(C(=NN2C)C)C(=O)C3=C(C=C(C=C3)Cl)Cl | |
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No data | |
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ASRAWSBMDXVNLX-UHFFFAOYSA-N | |
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InChI=1S/C19H16Cl2N2O4S/c1-11-4-7-14(8-5-11)28(25,26)27-19-17(12(2)22-23(19)3)18(24)15-9-6-13(20)10-16(15)21/h4-10H,1-3H3 | |
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Yes |
General status |
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Herbicide | |
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Benzoylpyrazole | |
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Synthetic | |
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Bleaching: Inhibition of 4-HPPD | |
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58011-68-0 | |
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42619 | |
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439.31 | |
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4-(2,4-dichlorobenzoyl)-1,3-dimethyl-1H-pyrazol-5-yl 4-methylbenzene-1-sulfonate | |
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4-(2,4-dichlorobenzoyl)-1,3-dimethylpyrazol-5-yl toluene-4-sulfonate | |
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(2,4-dichlorophenyl)[1,3-dimethyl-5-[[(4-methylphenyl)sulfonyl]oxy]-1H-pyrazol-4-yl]methanone | |
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F2 | |
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27 | |
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Not applicable | |
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Not applicable | |
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Colourless crystalline solid |
Formulations |
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0.055 | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
Low | ||||||||
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1400 | Q3 Q = Miscellaneous internet resources Ethanol3 = Unverified data of known source |
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11800 | Q3 Q = Miscellaneous internet resources Ethyl acetate3 = Unverified data of known source |
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600 | L3 L = Pesticide manuals and hard copy reference books / other sources Hexane3 = Unverified data of known source |
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118 | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
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3.80 X 1002 | Calculated | - | |||||||
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2.58 | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
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1.47 | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
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1.3 X 10-02 | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
Low volatility | ||||||||
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Degradation |
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9 | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
Non-persistent | |||||||
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9 | Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source |
Non-persistent | ||||||||
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Literature gives DT₅₀ as 8-10 days general soils (Q3), <1.0 day in paddy water and 2.2 days in paddy soil (R3) | ||||||||||
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Soil adsorption and mobility |
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Fate indices |
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Cannot be calculated | - | - | |||||||||||||||||||||||||
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9550 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
Low | ||||||||
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92.0 | Q3 Q = Miscellaneous internet resources Cyprinus carpio3 = Unverified data of known source |
Moderate | ||||||||
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General |
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High (class III) | - | - | ||||||||
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9550 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
Low | ||||||||
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5000 | L3 L = Pesticide manuals and hard copy reference books / other sources Rat3 = Unverified data of known source |
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2.5 | Q3 Q = Miscellaneous internet resources Rat3 = Unverified data of known source |
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Intraperitoneal LD₅₀ = 9550 mg kg⁻¹ | V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) Rat3 = Unverified data of known source |
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Health issues |
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Slightly hazardous if ingested |
Handling issues |
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No information available | |||
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Not classified: Obsolete | |||
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Not classified: Obsolete | |||
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Not classified: Obsolete | |||
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pyrazolynate | ||
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pyrazolynate | ||
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Record last updated: | 31/05/2018 |
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 |