Telluric acid - Telluric acid

Japanese: テルル酸 - テルルさん(英語表記)telluric acid
Telluric acid - Telluric acid
This usually refers to orthotelluric acid, H 6 TeO 6. Another salt, metatelluric acid, H 2 TeO 4, is known but has not been isolated.
[Production method]
Tellurium or tellurium dioxide is oxidized with a mixture of nitric acid, hydrochloric acid, and a small amount of chloric acid, or with nitric acid and potassium permanganate. It can also be obtained by oxidation with 30% hydrogen peroxide or boiling nitric acid containing a small amount of chromium(VI) oxide, CrO3 . After careful evaporation, it is obtained as colorless crystals.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
通常はオルトテルル酸orthotelluric acid H6TeO6のことをいう。ほかにメタテルル酸H2TeO4の塩が知られているが単離されていない。
[製法]
 テルルまたは二酸化テルルを,硝酸と塩酸および少量の塩素酸の混合物,あるいは硝酸と過マンガン酸カリウムで酸化する。30%過酸化水素水,または少量の酸化クロム(VI) CrO3を含む沸騰硝酸で酸化しても得られる。注意深く蒸発すると無色の結晶として得られる。

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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