This invention relates to a method for preparing an acid addition salt of a polyacidic basic compound, or a water adduct having basic site(s) stronger than pyridine. The method comprises reacting the polyacidic basic compound with an acid salt of pyridine. <；??>；By the present invention, the number of moles of an added acid in the acid addition salt of the polyacidic basic compound can be readily changed to a number suited for the polyacidic basic compound as needed. <；IMAGE>；本發明係關於一種製備具有強於吡啶的(多個)鹼位(basic site)的多元鹼化合物之酸加成鹽或水加合物之方法。該方法包含使該多元鹼化合物與吡啶之酸式鹽反應。；根據本發明，將不難按需要使多元鹼化合物之酸加成鹽中所添加之酸的莫耳數變化為適於該多元鹼化合物之數值。
