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(接上期)三、可溶液剂(SL)当农药活性成分(水中分解、水中溶解度太小,或不能成水溶性盐等)不能形成水剂,却在亲水性极性溶剂中有较大溶解度,可以加工为可溶液剂。可溶液剂是指农药活性成分与非水介质(亲水性极性溶剂)形成的透明溶液剂型,用水稀释后得到的稀释液仍为透明溶液。1.亲水性极性溶剂制备可溶液剂(SL),一般不用非极性溶剂;而大多使用中等或强极性亲水性溶剂。所谓极性溶剂是指含有羟基、羰基和
(Continued) Third, the SL solution (SL) When the pesticide active ingredient (water decomposition, water solubility is too small, or can not be water-soluble salts, etc.) can not form a water agent, but in a larger hydrophilic polar solvent Solubility, can be processed into a solution. Soluble agent refers to a solution of pesticide active ingredient and non-aqueous medium (hydrophilic polar solvent) to form a transparent solution, diluted with water obtained after the solution is still a transparent solution. 1. Hydrophilic polar solvents Preparation of solutions (SL), generally do not use non-polar solvents; mostly hydrophilic medium or highly polar solvents. The so-called polar solvent is containing hydroxyl, carbonyl and