请教各位大佬一个问题：美国药典上有个鉴别项，在二甲基亚砜中加入氢碘酸，反应后生成什么物质呀？这个物质非常臭，是否对人体有伤害呢？
原文如下：
Add 1.5 mL cautiously and dropwise to 2.5 mL of hydriodic acid in a test tube cooled in ice. Filter the mixture rapidly, and collect theprecipitate. Dry the precipitate in vacuum: a deep violet, crystalline solid is obtained, and it is soluble in chloroform, yielding a redsolution.
