PROBLEM TO BE SOLVED: To provide an aqueous suspension preparation having excellent suspensibility after storage for a long time and exhibiting suppressed particle agglomeration.SOLUTION: The aqueous suspension preparation contains (a) an agrochemical active component and (b) guanidine or a water-soluble salt of guanidine, wherein the amount of the guanidine or the water-soluble salt of guanidine added to the agrochemical active component is 0.1-2.5 times in terms of wt.% ratio. The aqueous suspension preparation keeps excellent suspensibility even after storage for a long time and exhibits suppressed particle agglomeration and, accordingly, there is no problems of e.g. loss of commercial value caused by precipitation and separation. Furthermore, the preparation is excellent in cost owing to its simple constitution.COPYRIGHT: (C)2010,JPO&INPIT【課題】長期保管後の懸垂性に優れ、粒子凝集の抑制された水性懸濁製剤を提供すること。【解決手段】本発明の水性懸濁製剤はa)農薬活性成分、b)グアニジンまたはグアニジンの水溶性塩、を含有することおよび前記グアニジンまたはグアニジンの水溶性塩の農薬活性成分に対する添加量が重量%比で0.1倍~2.5倍であることを特徴とする。本発明の水性懸濁製剤は、長期保管後も懸垂性に優れ、粒子凝集が抑制されるため沈降分離による製品価値の喪失等の問題が生じない。さらに構成が単純なため、コスト面でも優れる。【選択図】なし
