PROBLEM TO BE SOLVED: To obtain granular wettable powder having improved water dispersibility and suspensibility without being affected by kinds and properties of an agrochemical active ingredient and to provide a method for producing the same.SOLUTION: This granular wettable powder is characterized by comprising fine particle of solid agrochemical active ingredient having normal-temperature extensibility and exhibiting caking property even in preservation at a melting point or below and basic white carbon having 2-7.5 &mum volume median particle diameter as essential raw material components. This method for granular wettable powder production comprises formulating the solid agrochemical active ingredient with the basic white carbon as the essential raw material components.COPYRIGHT: (C)2003,JPO【課題】 農薬活性成分の種類、性状に影響を受けることなく、顆粒状水和剤の水中分散性、懸垂性を向上させた顆粒状水和剤、及びその製造方法を提供する。【解決手段】 常温で展延性を有し、かつ融点以下の保存でも固結性を示す固体農薬活性成分微粒子と、体積中位径2~7.5μmの塩基性ホワイトカーボンとを必須原料成分とすることを特徴とする顆粒状水和剤。当該固体農薬活性成分と、塩基性ホワイトカーボンとを必須原料成分として配合する顆粒状水和剤の製造方法。