Crystalline form of tefluthrin, process for its preparation and use thereof
AssigneeJiangsu Rotam Chemistry Co., Ltd
InventorJames Timothy Bristow
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Abstract
Provided are the crystalline form of tefluthrin of formula (I), the crystal preparation process, the analyses of the crystal through various analytical methods and using the crystal to prepare stable agrochemical formulation. Also provided is the use of various solvents towards the crystalline form preparation conditions.
Claims27
A crystalline modification I of 2,3,5,6-tetrafluoro-4-methylbenzyl-(1RS,3RS)-3-[(Z)-2-chloro-3,3,3-trifluoroprop-1-enyl]-2,2-dimethylcyclopropanecarboxylate (tefluthrin) exhibiting at least 3 of the following reflexes, in any combination, as 2θ±0.20 degree in X-ray powder diffractogram (X-RPD) recorded using Cu—Kα radiation at 25° C.:
- 2θ=12.54±0.20,
- 2θ=12.82±0.20,
- 2θ=16.82±0.20,
- 2θ=24.72±0.20,
- 2θ=25.18±0.20, and
- 2θ=31.63±0.20.
Dependencies are inferred from the claim text.