Calcium bromate

Structural formula
General
Surname	Calcium bromate
other names	E924b
Molecular formula	Ca (BrO 3 ) 2
Brief description	white crystals
External identifiers / databases
CAS number 10102-75-7 EC number 233-278-9 ECHA InfoCard 100.030.240 PubChem 61478 Wikidata Q416861
properties
Molar mass	295.88 g mol −1
Physical state	firmly
Melting point	180 ° C
solubility	soluble in water
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 272-315-319-335 P: 210-220-221-305 + 351 + 338-405-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Calcium bromate is the calcium salt of bromic acid .

presentation

Calcium bromate can be made by dissolving calcium carbonate in bromic acid.

${\displaystyle \mathrm {CaCO_{3}+2\ HBrO_{3}\longrightarrow Ca(BrO_{3})_{2}+H_{2}O+CO_{2}\uparrow } }$

Calcium bromate is also formed by the salt formation reaction between calcium hydroxide and bromic acid.

${\displaystyle \mathrm {Ca(OH)_{2}+2\ HBrO_{3}\longrightarrow Ca(BrO_{3})_{2}+2\ H_{2}O} }$

properties

Calcium bromate crystallizes as a monohydrate in monoclinic columns that are isomorphic with strontium bromate and barium bromate . They give off their crystal water between 130 and 150 ° C. At 270-300 ° C, calcium bromate decomposed to calcium .

${\displaystyle \mathrm {Ca(BrO_{3})_{2}\longrightarrow CaBr_{2}+3\ O_{2}\uparrow } }$

Individual evidence

1. ↑ ^{a b c d e} data sheet calcium bromate at AlfaAesar, accessed on April 30, 2017 ( PDF )(JavaScript required) .
2. ↑ ^{a b} R. Abegg, F. Auerbach: "Handbuch der inorganic Chemie". Verlag S. Hirzel, Vol. 2, 1908, p. 129; Full text
3. ^ ^{A b} V. A. Stenger, RM van Effen, LC Walker: "Solubility of Calcium Bromate in Water" in J. Chem. Eng. Data 2002 , 47 (3), pp. 618-619. doi : 10.1021 / je010264g