固体 - 盐，氢氧化物，碳酸盐
盐含有粘附或封闭的水分。只要确保盐不溶解，可以容易地确定粘附水。工作介质为1：3（v / v）甲醇 - 氯仿混合物。For the determination of the total water content, there are two methods available: the first using a solvent mixture in which the salt completely dissolves, e.g., in a 2:1 methanol–formamide mixture, and the second using the heating (oven) method, in which a dry gas stream transfers the water released to the titration cell.