シアン化銀カリウム 化学特性,用途語,生産方法
外観
白色, 結晶～結晶性粉末
溶解性
水, エタノールに可溶。水に溶けやすい。
解説
銀シアン化カリウム，正しくはジシアノ銀(Ⅰ)酸カリウムという。銀塩水溶液にシアン化カリウムを加えると、初めシアン化銀が沈殿してくるが、さらにシアン化カリウムを加えると、錯イオンを生成して溶け、無色の溶液となり、この溶液から無色の結晶として得られる。化学式K[Ag(CN)2]、式量199.0、比重2.36。水、エタノール（エチルアルコール）に溶け、乾燥していれば光によって変化しない。溶液は銀めっき液として用いられる。きわめて毒性が強い。
化学的特性
Potassium silver cyanide is a poisonous, white solid made of crystals, which are light sensitive. It is soluble in water and acids and slightly soluble in ethanol. It emits very toxic fumes when heated to decomposition.
使用
In silver plating.
一般的な説明
White crystals. Poisonous. Used in silver plating, as a bactericide and in the manufacture of antiseptics. Not registered as a pesticide in the U.S.
空気と水の反応
Water soluble [Merck].
反応プロフィール
Potassium dicyanoargentate is light sensitive. Acids precipitate silver cyanide from its aqueous solution. Fusion with metal chlorates, perchlorates, nitrates or nitrites can cause violent explosions [Bretherick 1979 p. 101].
危険性
Very toxic.
健康ハザード
The primary health hazard is as a cyanide. (Non-specific -- Cyanide, Inorganic, n.o.s.). It is poisonous and may be fatal if inhaled, swallowed or absorbed through the skin. Fire may produce irritating or poisonous gases.
火災危険
When heated to decomposition, Potassium dicyanoargentate emits very toxic fumes of cyanide and nitrogen oxides. Avoid light.
安全性プロファイル
Poison by ingestion. A
severe skin and eye irritant. When heated to
decomposition it emits very toxic fumes of
CN-, K2O, and NOx. See also CYANIDE
and SILVER COMPOUNDS.
職業ばく露
Potassium silver cyanide is used in
silver plating; as a bactericide; and in the manufacture
of antiseptics. Not registered for use as a pesticide in the
United States
輸送方法
UN1588 Cyanides, inorganic, solid, n.o.s.,
Hazard Class: 6.1; Labels: 6.1-Poisonous materials,
Technical Name Required.
不和合性
Contact with acid, acid fumes release
hydrogen cyanide. Incompatible with water, steam, or when
heated to decomposition, emits toxic and flammable cyanide
vapors. Potassium silver cyanide reacts with carbon dioxide
releasing hydrogen cyanide. Light sensitive. Incompatible
with oxidizers (chlorates, nitrates, peroxides, permanganates,
perchlorates, chlorine, bromine, fluorine, etc.); contact may
cause fires or explosions. Keep away from alkaline materi-
als, strong bases, strong acids, oxoacids, epoxides. Acids
precipitate silver cyanide from its aqueous solution. Fusion
with metal chlorates, perchlorates, nitrates or nitrites can
cause violent explosions
廃棄物の処理
Consult with environmental
regulatory agencies for guidance on acceptable disposal
practices. Generators of waste containing this contaminant
(≥100 kg/mo) must conform with EPA regulations govern-
ing storage, transportation, treatment, and waste disposal.
シアン化銀カリウム 上流と下流の製品情報
原材料
準備製品