查看“︁溴酸钙”︁的源代码

{{Chembox
| CustomizedImage= [[File:2.svg|x50px|2 ·]] [[File:Bromate anion.svg|110px|Struktur des Bromations]] [[File:Ca2+.svg|x50px|Struktur des Ca<sup>2+</sup>-Ions]]
|OtherNames = E924b
| Section1={{Chembox Identifiers
| CASNo= 10102-75-7
| CASNo_Ref = {{cascite|correct|CAS}}
| EC-number= 233-278-9
| ECHA-ID         = 100.030.240
| PubChem         = 61478
|SMILES=O=Br(=O)[O-].[Ca+2].[O-]Br(=O)=O
}}
|Section2={{Chembox Properties
| Formula={{chem|Ca(BrO|3|)|2}}
| Appearance= 白色晶体<ref name="Alfa"/>
| MolarMass    = 295.88 
| Density= 
| MeltingPt= 180 °C<ref name="Alfa" />
| BoilingPt= 
| Solubility= 可溶<ref name="Alfa">{{Alfa|18124|Datum=30. April 2017}}</ref>
}}
|Section8={{Chembox Related
|OtherCations=[[溴酸锶]]<br />[[溴酸钡]]
| OtherAnions=[[氯酸钙]]<br />[[碘酸钙]]<br />[[溴化钙]]
}}
}}

'''溴酸钙'''是[[钙]]的[[溴酸盐]]，化学式 {{chem|Ca(BrO|3|)|2}}。

== 制备==
溴酸钙可以由[[碳酸钙]]和溴酸反应而成。<ref name="Abegg"/>

:<math>\mathrm{CaCO_3 + 2\ HBrO_3 \longrightarrow Ca(BrO_3)_2 + H_2O + CO_2 \uparrow}</math> 

它也可以由[[溴酸]]和[[氢氧化钙]]中和而成。<ref name="Abegg">R. Abegg, F. Auerbach: "Handbuch der anorganischen Chemie". Verlag S. Hirzel, Bd. 2, 1908, S.&nbsp;129; [http://www.archive.org/stream/a2handbuchderano02abeguoft#page/128/mode/2up Volltext]</ref>

:<math>\mathrm{Ca(OH)_2 + 2\ HBrO_3 \longrightarrow Ca(BrO_3)_2 + 2\ H_2O}</math>

== 性质==
溴酸钙一水合物是[[单斜晶系]]的，和[[溴酸锶]]和[[溴酸钡]]一样。在 130 至150&nbsp;°C 时，水合物脱水，形成无水溴酸钙。<ref name="Stenger">V. A. Stenger, R. M. van Effen, L. C. Walker: "Solubility of Calcium Bromate in Water" in J. Chem. Eng. Data '''2002''', ''47''(3), S.&nbsp;618–619. {{doi|10.1021/je010264g}}</ref>在 270–300&nbsp;°C 时，无水溴酸钙会分解成[[溴化钙]]，放出氧气。<ref name="Stenger"/>

:<math>\mathrm{Ca(BrO_3)_2 \longrightarrow CaBr_2 + 3\ O_2 \uparrow}</math>

==用处==
在某些国家，溴酸钙用作面包的面团和[[面粉]]的添加剂，[[E编码]] '''E924b'''。<ref>{{cite book|url=https://archive.org/details/foodadditiveshan0000lewi|url-access=registration|title=Food Additives Handbook|publisher=Springer Science & Business Media|isbn=9780442205089|last1=Lewis|first1=Richard J|year=1989}}</ref>

== 参考资料==
<references />
{{钙化合物}}
{{溴酸盐}}

[[Category:钙化合物]]
[[Category:溴酸盐]]