2楼: Originally posted by qfw_68 at 2013-12-11 06:40:05
应该是浓硫酸被稀释一半。

3楼: Originally posted by 真是我 at 2013-12-11 09:20:22
谢谢！确定吗...

4楼: Originally posted by qfw_68 at 2013-12-11 10:08:33
我确定。
参见半浓盐酸：
a semi-concentrated (about 18%) hydrochloric acid

4,5-Dimethyl-thienoisothiazolo-3(2H)-one-1,1-dioxides, compositions, and methods of use as a sweetener
US 4233333 A
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