臭素酸カルシウムのソースを表示

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|   Formula = Ca(BrO<sub>3</sub>)<sub>2</sub>
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| | DeltaHf = −685.8 kJ mol<sup>−1</sup><ref name=Parker>D.D. Wagman, W.H. Evans, V.B. Parker, R.H. Schumm, I. Halow, S.M. Bailey, K.L. Churney, R.I. Nuttal, K.L. Churney and R.I. Nuttal, The NBS tables of chemical thermodynamics properties, ''J. Phys. Chem.'' Ref. Data 11 Suppl. 2 (1982).</ref>
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'''臭素酸カルシウム'''（しゅうそさんカルシウム、[[英語|英]]''Calcium bromate''）は[[カルシウム]]の[[臭素酸塩]]で、化学式Ca(BrO<sub>3</sub>)<sub>2</sub>で表される[[無機化合物]]。一部の国では[[臭素酸カリウム]]と同様に[[小麦粉]]改良剤として用いられるが、日本では認可されていない。（[[E番号]] E924b）

== 生成 ==
水溶液中で[[水酸化カルシウム]]に[[臭素]]を加え加熱すると、[[不均化]]反応により生成し、溶液を濃縮すると一水和物が析出する<ref name=daijiten>『化学大辞典』　共立出版、1993年</ref>。
: <chem>6 Ca(OH)2\ + 6 Br2 -> Ca(BrO3)2\ + 5 CaBr2\ + 6 H2O</chem>

== 性質 ==
一水和物は[[斜方晶系]]の無色の結晶であり、水に易溶で[[潮解性]]を持ち、加熱により脱水して180℃程度で無水物になる<ref name=daijiten />。

さらに強熱すると[[酸素]]を放出して分解する。
: <chem>Ca(BrO3)2 -> CaBr2\ + 3 O2</chem>

== 脚注・参考文献 ==
{{reflist}}

== 外部リンク ==
* [https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200907011008441776 J-GLOBAL]

{{カルシウムの化合物}}
{{Chem-stub}}
{{DEFAULTSORT:しゆうそさんかるしうむ}}
[[Category:カルシウムの化合物]]
[[Category:臭素酸塩]]