Potassium Perchlorate - Potassium Perchlorate

KClO ₄ (138.55). When perchloric acid or sodium perchlorate is added to an aqueous solution of potassium salts, it is produced by double decomposition. It is a colorless orthorhombic crystal. It is stable at room temperature. At temperatures above 400 °C, it decomposes into oxygen and potassium chloride. Its density is 2.52 g cm ^-3 . Its solubility in 100 g of water is 0.75 g (0 °C) and 21.8 g (100 °C). It is slightly soluble in ethanol and methanol, and insoluble in ether. Since it is hardly soluble in water, potassium ions can be precipitated as potassium perchlorate, and the potassium can be quantified. As a strong oxidizing agent, it decomposes in the presence of organic matter or combustible materials, but is more stable than potassium chlorate. It is used as an oxidizing agent, rocket fuel, explosives, matches, raw material for fireworks (red-purple), analytical reagent, etc. It is irritating to the skin and mucous membranes. [CAS 7778-74-7]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

KClO₄(138.55)．カリウム塩の水溶液に，過塩素酸または過塩素酸ナトリウムを加えると，複分解により生じる．無色の斜方晶系結晶．常温で安定である．400 ℃ 以上では酸素と塩化カリウムに分解する．密度2.52 g cm^－3．水100 g に対する溶解度は0.75 g(0 ℃)，21.8 g(100 ℃)．エタノール，メタノールに難溶，エーテルに不溶．水に溶けにくいので，カリウムイオンを過塩素酸カリウムとして沈殿させ，カリウムを定量することができる．強い酸化剤として，有機物や可燃物の存在下で分解するが，塩素酸カリウムよりは安定である．酸化剤，ロケット燃料，爆薬，マッチ，花火(赤紫色)の原料，分析試薬などに用いられる．皮膚や粘膜を刺激する．[CAS 7778-74-7]

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