The conditions by KMnO_4 volumetry were studied on determination of the content of acorn tannin. The results were compared with those of the complexometry and the Hide powder method.

• 本文探讨了KMnO_4容量法对橡子鞣质含量进行测定的条件,包括水浸提温度、皮革粉量等,并与皮粉法、络合量法的测定结果作了比较。