Octadecatungstodiphosphate - Octadecatungstodiphosphate

Japanese: オクタデカタングスト二リン酸塩 - おくたでかたんぐすとにりんさんえん
Octadecatungstodiphosphate - Octadecatungstodiphosphate

...Ammonium salt (NH 4 ) 3 [PW 12 O 40 ]・4H 2 O, potassium salt K 3 [PW 12 O 40 ]・4H 2 O, sodium salt Na 3 [PW 12 O 40 ]・15H 2 O, etc. are all colorless crystals.
[Octadecatungstodiphosphate]
The general formula is M I 6 [P 2 W 18 O 62 ]. For example, dissolve sodium tungstate (Na 2 WO 4 ・2H 2 O) in hot water, add four times the amount of phosphoric acid, boil, add a small amount of concentrated nitric acid, and then add ammonium chloride to obtain the ammonium salt.

*Some of the terminology explanations that mention "octadecatungstodiphosphate" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…アンモニウム塩(NH4)3[PW12O40]・4H2O,カリウム塩K3[PW12O40]・4H2O,ナトリウム塩Na3[PW12O40]・15H2Oなどはいずれも無色晶。
[オクタデカタングスト二リン酸塩octadecatungstodiphosphate]
 一般式MI6[P2W18O62]。たとえばタングステン酸ナトリウムNa2WO4・2H2Oを熱水に溶かし,これにリン酸を4倍量加えて煮沸してから,濃硝酸を少量加えたのち塩化アンモニウムを加えるとアンモニウム塩が得られる。…

※「オクタデカタングスト二リン酸塩」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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