Barium bromate
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| Barium bromate | |
|---|---|
| IUPAC name | Barium bromate |
| Other names | Barium bromate(V) |
| Identifiers | |
| InChI | InChI=1/Ba.2BrHO3/c;2*2-1(3)4/h;2*(H,2,3,4)/q+2;;/p-2 |
| InChIKey | VEASZGAADGZARC-NUQVWONBAI |
| Standard InChI | InChI=1S/Ba.2BrHO3/c;2*2-1(3)4/h;2*(H,2,3,4)/q+2;;/p-2 |
| Standard InChIKey | VEASZGAADGZARC-UHFFFAOYSA-L |
| CAS number | [] |
| ChemSpider | |
| Properties[1] | |
| Chemical formula | Ba(BrO3)2 |
| Molar mass | 393.13 g mol−1 |
| Appearance | white crystalline solid |
| Density | 4.0 g cm−3 |
| Melting point |
270 °C decomp. |
| Related compounds | |
| Other anions | Barium chlorate Barium iodate |
| Other cations | Calcium bromate Strontium bromate |
| Other compounds | Barium bromide Barium hypobromite Barium bromite |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Barium bromate, Ba(BrO3)2, is the barium salt of bromic acid. It is used as a corrosion inhibitor.[1]
Preparation
Barium bromate is usually prepared by the electrolysis of sodium bromide solution at 65–70 °C, in the presence of dichromate and using anodes of lead dioxide or iron and cathodes of stainless steel or copper.[2] The sodium bromate can be crystallized by cooling the electrolyte, and any unoxidized bromide recycled.[1]
Barium bromate can also be prepared by reacting bromine with sodium hydroxide solution at 50–90 °C.[3][1]
- 3 Br2 + 3 OH− ⇌ BrO−3 + 5 Br− + 3 H+
Notes and references
Notes
References
- ↑ 1.0 1.1 1.2 1.3 Ukeles, S. D.; Freiberg, M. Bromine, Inorganic Compounds. In Kirk-Othmer Encyclopedia of Chemical Technology; John Wiley: New York, 2002. DOI: 10.1002/0471238961.021815131001031.
- ↑ Osuga, Takasi; Sugino, Kiichiro Electrolytic Production of Bromates. J. Electrochem. Soc. 1957, 104 (7), 448–51. DOI: 10.1149/1.2428623.
- ↑ Prager, Aavi; Smilovitch, Shaul; Freiberg, Mira, et al. (Bromine Compounds Ltd.) Alkali and alkaline earth metal bromide and bromate solid mixtures and process for preparation thereof. IL Patent 84830, published 24 January 1995.
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