Lead Acetate - Sakusan Namari

There are lead acetate(II) and lead acetate(IV). When simply referring to lead acetate, it means Pb(CH ₃ COO) ₂ ･3H ₂ O (lead sugar). [ I ] Lead acetate(II): Pb(CH ₃ COO) ₂ (325.29). When warm dilute acetic acid is added to lead oxide(II) and the solution is dissolved and then cooled, the trihydrate is obtained. When the trihydrate is heated to 75°C, the anhydrous form is obtained. The anhydrous form is a white crystal. Melting point 204°C. Density 3.12 g cm ^-3 . The trihydrate is a colorless monoclinic crystal. Density 2.54 g cm ^-3 . Melting point 75°C. Both are easily soluble in water, glycerin, etc. It is used as a raw material for producing lead salts, lead plating, waterproofing, varnish production, pigment production, hair dye, analytical reagent, pharmaceuticals, and dyeing. It is toxic. [CAS 301-04-2:Pb(CH ₃ COO) ₂ ][CAS 6080-56-4:Pb(CH ₃ COO) ₂ ･3H ₂ O][CAS 1335-32-6:Pb(CH ₃ COO) ₂ ･2PbO･2H ₂ O]【 II 】Lead(IV) acetate: Pb(CH ₃ COO) ₄ (443.38). Also called lead tetraacetate. It is obtained by dissolving trilead tetroxide in glacial acetic acid and cooling. It is a colorless monoclinic crystal. Melting point 175 °C. Density 2.23 g cm ^-3 . It dissolves in hot acetic acid and chloroform, but decomposes in water to become lead(IV) oxide. It is used as a strong oxidizing agent in organic synthesis. [CAS 546-67-8]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

酢酸鉛(Ⅱ)，(Ⅳ)がある．単に酢酸鉛というときはPb(CH₃COO)₂･3H₂O(鉛糖)をいう．【Ⅰ】酢酸鉛(Ⅱ)：Pb(CH₃COO)₂(325.29)．酸化鉛(Ⅱ)に温希酢酸を加えて溶かし，冷却すると三水和物が得られる．三水和物を75 ℃ で熱すると無水物が得られる．無水物は白色の結晶．融点204 ℃．密度3.12 g cm^－3．三水和物は無色の単斜晶系結晶．密度2.54 g cm^－3．融点75 ℃．いずれも水，グリセリンなどに易溶．鉛塩の製造原料，鉛めっき，防水加工，ワニス製造，顔料製造，染髪剤，分析試薬，医薬品，染色用に用いられる．有毒．[CAS 301-04-2:Pb(CH₃COO)₂][CAS 6080-56-4:Pb(CH₃COO)₂･3H₂O][CAS 1335-32-6:Pb(CH₃COO)₂･2PbO･2H₂O]【Ⅱ】酢酸鉛(Ⅳ)：Pb(CH₃COO)₄(443.38)．四酢酸鉛ともいう．四酸化三鉛を氷酢酸に溶かし，冷却すると得られる．無色の単斜晶系の結晶．融点175 ℃．密度2.23 g cm^－3．熱酢酸，クロロホルムに溶けるが，水には分解して酸化鉛(Ⅳ)となる．有機合成で強酸化剤として用いられる．[CAS 546-67-8]

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