皂土

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Al₂H₂O₁₂Si₄=359．16

CAS-1302-78-9

为天然的水合硅酸铝，一些铝和硅原子可为其他原子如镁与铁所替代。

A nature hydroated aluminum silicate in which some of the aluminum and silicon atoms may be replaced by other atoms such as magnesium and iron．

药用辅料。用作混悬剂、乳剂、稳定剂、吸附剂。

膨润土。

Bentonite，Mineral Soap，Soap Caly，Wilkinite．

BP，NF，USAN．