二酢酸鉛(II)·3水和物 化学特性,用途語,生産方法
外観
白色の結晶
定義
本品は、次の化学式で表される鉛化合物である。
溶解性
水に易溶 (44.3g/100ml水 20℃), エタノールに可溶。水に溶けやすく、エタノールに溶けにくい。
用途
硫化物の分析、酢酸鉛紙(ひ素試験)、医薬原料。
用途
合成用原料(鉛塩、染料)、染色助剤。
用途
ファインセラミックスの製造原科。
化粧品の成分用途
毛髪着色剤
効能
収斂薬
使用上の注意
純度は金属ベースで差数法によって算出したもので、重量又は容量分析等の化学的方法によるものではありません。使用目的により、正確な含量が必要な場合は、それらの方法によって測定する必要があります。空気中で徐々に風解する
化学的特性
Lead acetate trihydrate, also known as plumbous acetate trihydrate, has the chemical formula Pb(C2H3O2)2·3H2O. It appears as a white, monoclinic crystalline solid. Upon heating it loses some of its water of crystallization, and after melting, decomposes at 200 °C. The trihydrate is highly soluble in water but insoluble in ethyl alcohol. It has an intensely sweet taste, hence it is sometimes called sugar of lead, but it is poisonous. The trihydrate is made by dissolving lead monoxide in hot dilute acetic acid solution; on cooling, large crystals separate, sometimes up to 60-cm long.
使用
Lead acetate trihydrate, the usual commercial form, is used in the preparation of basic lead carbonate and lead chromate, as a mordant in cotton dyes, as a reagent for the manufacture of lead salts of higher fatty acids, as a water repellant, as a component in combined toning and fixing baths for daylight printing papers, and as a means of treating awnings and outdoor furniture to prevent removal of mildew- and rotproofing agents by rain or laundering. Other uses include preparation of rubber antioxidants; processing agent in the cosmetic, perfume, and toiletry industries; component of coloring agents for adhesives; and preparation of organic lead soaps as driers of paints and inks.
主な応用
Lead(II) acetate trihydrate was a component of the solution which was used towards the fabrication of platinum black microelectrodes. Lead acetate trihydrate may be used in the manufacturing of other lead salts. It may be used in the textile industry for dyeing and printing. In paint industry, lead acetate acts as a drying agent and as a purification agent in chemical synthesis.
一般的な説明
Lead acetate trihydrate appears as white powder or white chunky solid. Slight odor. pH (5% aqueous solution at 77°F) 5.5-6.5. It is water soluble and stable under normal conditions.
空気と水の反応
Slowly effloresces in air. Water soluble but solutions absorb carbon dioxide from the air and to give incompletely soluble products.
反応プロフィール
Lead acetate trihydrate may react with acids and oxidizing agents. Is incompatible with sulfates, citrates, tartrates, chlorides, carbonates, alkalis, tannin, resorcinol, salicylic acid, phenol, chloral hydrate, sulfites, vegetable infusions and tinctures. Incompatible with phosphates . Incompatible with KBrO3 and with EDTA.
火災危険
Literature sources indicate that Lead acetate trihydrate is nonflammable.
純化方法
Crystallise it twice from anhydrous acetic acid and dry it under vacuum for 24hours at 100o. The solubility in H2O is 63% (at ~20o) and 200% (at boiling point). [Beilstein 2 IV 118.]
二酢酸鉛(II)·3水和物 上流と下流の製品情報
原材料
準備製品