Chloroplatinic acid (English spelling)

Japanese: 塩化白金酸 - えんかはっきんさん(英語表記)chloroplatinic acid
Chloroplatinic acid (English spelling)
(1) Platinum(II) tetrachloride H 2 [PtCl 4 ]. When platinum(II) chloride is dissolved in hydrochloric acid, it is obtained as a dark red solution. (2) Platinum(IV) hexachloride H 2 [PtCl 6 ]. Yellow, deliquescent crystals obtained from a hydrochloric acid solution of platinum(IV) chloride. Easily soluble in water and alcohol. A fairly strong divalent acid, various metal salts are known. It is used in platinum plating, photography, platinum mirrors, catalysts for the production of acetic acid, and catalysts for the production of sulfuric acid. A 10% aqueous solution of this acid usually produces a precipitate when added to an aqueous solution of alkaloids, so it is used as an alkaloid reagent.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
(1) テトラクロロ白金 (II) 酸  H2[PtCl4] 。塩化白銀 (II) を塩酸に溶かすと,暗赤色溶液として得られる。 (2) ヘキサクロロ白金 (IV) 酸  H2[PtCl6] 。塩化白金 (IV) の塩酸溶液から得られる黄色,潮解性の結晶。水,アルコールに易溶。かなり強い2価の酸で,種々の金属塩が知られている。白金メッキ,写真,白金鏡,酢酸製造用触媒,硫酸製造用触媒などに使用される。通常 10%水溶液はアルカロイド水溶液に加えると沈殿を生じるので,アルカロイド試薬として利用される。

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