Prevention and treatment of annual weeds in rice transplanting field by mixing pyrazosulfuron-ethyl, simetryn and butachlor
A technology of pyrazosulfuron-methyl and sigrazin, which is applied in the field of pesticides, can solve the problems of hidden rice damage, induced resistant weeds, and decreased control effect, achieving obvious synergistic control effect, long-lasting effect, and excellent performance Effect
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[0094] 2. Preparation Examples
[0095] The other names, structural formulas and basic physical and chemical parameters of the active ingredients pyrazosulfuron-methyl, sichuanjing and butachlor in this product are as follows: a) pyrazosulfuron-methyl
[0096] ISO generic name: pyrazosulfuron-ethyl
[0097] CAS Registry Number: 93697-74-6
[0098] Chemical name: 5-(4,6-Dimethoxypyrimidin-2-ylcarbamoylaminosulfonyl)-1-methylpyrazole-4-carboxylic acid ethyl ester Structural formula:
[0099]
[0100] Experimental formula: C 14 H 18 N 6 O 7 S,
[0101] Relative molecular mass (according to 2011 international relative atomic mass): 414.4,
[0102] Biological activity: weeding,
[0103] Melting point (℃): 181~182,
[0104] Vapor pressure (20℃): 1.47×10 -7 Pa,
[0105] Solubility (20℃, g / L): water 1.45×10 -2 , Methanol 0.7, hexane 0.2, benzene 15.6, chloroform 234.4, acetone 31.7,
[0106] Stability: Stable for 6 months at 50°C; relatively stable at pH=7, and unstable in acidic or alkaline media.
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