Calcium bromate
| Names | |
|---|---|
| IUPAC name
Calcium bromate
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| Other names
bromic acid, calcium salt
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.030.240 |
| EC Number |
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| E number | E924b (glazing agents, ...) |
PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| Ca(BrO3)2 | |
| Molar mass | 295.8824 g/mol |
| Appearance | White monoclinic crystals |
| Density | 3.33 g/cm3[1] |
| Melting point | 180 °C[2] |
| 230 g/100 mL (20 °C) | |
| -84.0·10−6 cm3/mol | |
| Related compounds | |
Other anions
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calcium bromide calcium chloride calcium sulfide |
Other cations
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potassium bromate sodium bromate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Calcium bromate, Ca(BrO3)2, is a calcium salt of bromic acid. It is most commonly encountered as the monohydrate, Ca(BrO3)2•H2O.[3]
It can be prepared by reacting calcium hydroxide with sodium bromate or calcium sulfate with barium bromate. Above 180 °C, calcium bromate decomposes to form calcium bromide and oxygen.[3] In theory, electrolysis of calcium bromide solution will also yield calcium bromate.
It is used as a bread dough and flour "improver" or conditioner (E number E924b) in some countries.[4]
References
- ^ "Public Health Goal for Bromate in Drinking Water" (PDF). Office of Environmental Health Hazard Assessment, California Environmental Protection Agency. December 2009. Retrieved August 21, 2018.
- ^ Perry, Dale L (2016-04-19). Handbook of Inorganic Compounds, Second Edition. ISBN 9781439814628.
- ^ a b Ropp, Richard C (2012-12-31). Encyclopedia of the Alkaline Earth Compounds. ISBN 9780444595539.
- ^ Lewis, Richard J (1989). Food Additives Handbook. ISBN 9780442205089.
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