1 0 0 0 OA 亜硫酸カルシウムの酸化に関する研究
- 著者
- 村上 恵一 花田 光雄 高橋 俊一 宮田 吉郎
- 出版者
- 公益社団法人日本セラミックス協会
- 雑誌
- 窯業協會誌 (ISSN:18842127)
- 巻号頁・発行日
- vol.64, no.718, pp.7-12, 1956-01-01
- 被引用文献数
- 1 1 2
The results are summarised as follows:<br>1. The chemical formula of Calcium sulphite was found to be CaSO<sub>2</sub>⋅1/2 H<sub>2</sub>O.<br>2. The heat of oxidation of crystalline and amorphous CaSO<sub>3</sub>⋅1/2 H<sub>2</sub>O are 60.51 kcal/mol and 62.95 kcal/mol respectively.<br>3. Crystalline calcium magnesium sulphite was discovered and its chemical formula was determined to be CaMg(SO<sub>3</sub>)<sub>2</sub>⋅7H<sub>2</sub>O.<br>4. The dehydration temperature of crystalline and amorphous CaSO<sub>3</sub>⋅1/2 H<sub>2</sub>O are 400°C and 375°C respectively. The compound CaMg(SO<sub>3</sub>)<sub>2</sub>⋅7H<sub>2</sub>O dehydrates stepwise at 110°C and 200°C.<br>5. The calcium sulphite when suspended in water is easely oxidized with air bubbles to good gypsum crystals.