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Date: 6-11-2018
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Lead(II) Acetate
Lead(II) acetate, Pb(CH3COO)2 , is a white crystalline substance with a sweetish taste and is also known by one of the following trivial names: sugar of lead, lead sugar, salt of Saturn, and Goulard's powder. Lead acetate is soluble in water and glycerin and is toxic (like most other lead compounds). Its sweet taste has led to its use as a sugar substitute throughout history (despite its toxicity).
Lead acetate paper is used to detect the poisonous gas H2S (hydrogen sulfide), which reacts with lead(II) acetate on the moistened test paper to form a grey/black precipitate of HgS (lead sulfide).
Lead(II) acetate can be produced by dissolving lead(II) oxide in acetic acid:
If more PbO than the stoichiometric amount is dissolved in acetic acid, the reaction yields basic acetates (lead subacetate) such as
or
Pure lead(II) acetate is usually available in form of the trihydrate, Pb(CH3COO)2⋅3H2O, a colorless or white efflorescent monoclinic crystalline substance.
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