两性物质，既与酸也与碱发生反应生成盐。
An amphoteric compound reacts with both acids and bases to form salts.
不同的物质具有非常小的，然而又是差异较大的自递常数。因此，这种两性溶剂在滴定分析中找到了更为广阔的应用领域。
Various substance has very small autoprotolysis constants which, however, has more large difference, so that the amphoteric solvents are found more wide application in titrimetric analysis.
以硫酸化蓖麻油和季铵盐（ETA）为原料，在一定的反应条件下，硫酸化蓖麻油分子中的羟基与ETA发生取代反应，合成季铵型两性表面活性剂，与其它物质复配成两性皮革加脂剂。
The amphoteric surfactant was synthesized by sulfuric castor oil and ETA. The reaction condition of surfactant were deeply studied. The amphoteric fat liquor was recombinated with other surfactants.
以硫酸化蓖麻油和季铵盐（ETA）为原料，在一定的反应条件下，硫酸化蓖麻油分子中的羟基与ETA发生取代反应，合成季铵型两性表面活性剂，与其它物质复配成两性皮革加脂剂。
The amphoteric surfactant was synthesized by sulfuric castor oil and ETA. The reaction condition of surfactant were deeply studied. The amphoteric fat liquor was recombinated with other surfactants.
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