Sodium Perchlorate - Sodium Caesium Phosphate

Japanese: 過塩素酸ナトリウム - カエンソサンナトリウム

Chemical formula: NaClO ₄ . In industry, it is produced by anodic oxidation of a concentrated aqueous solution of sodium chlorate (NaClO _{3 )} , or by melting and decomposing sodium chlorate, adding concentrated hydrochloric acid to extract (the by-product NaCl is difficult to dissolve), and then removing the hydrochloric acid. 4NaClO ₃ -> 3NaClO ₄ + NaCl In the laboratory, an aqueous solution of perchloric acid is neutralized with sodium carbonate, the neutral solution is evaporated, and the solution is precipitated as monohydrate (NaClO ₄ ･H ₂ O) (below 50°C) or anhydrate (above 50°C) (the transition temperature between the two is 52.75°C).

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

化学式NaClO₄。工業的には，塩素酸ナトリウムNaClO₃の濃厚水溶液の陽極酸化で製するか，塩素酸ナトリウムを融解して分解し，濃塩酸を加えて抽出(副生するNaClは難溶)後，塩酸を除去する。　4NaClO₃―→3NaClO₄＋NaCl実験室では，過塩素酸水溶液を炭酸ナトリウムで中和後，中性水溶液を蒸発し，1水和物NaClO₄･H₂O(50℃以下)または無水和物(50℃以上)として析出させる(両者の転移温度は52.75℃)。

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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