CALCIUM BROMATE

Химические свойства

white, monoclinic, crystal(s) powder(s); oxidizing agent; used as a maturing agent, a dough conditioner [HAW93] [CRC10]

Использование

Calcium Bromate is a dough conditioner and maturing and bleaching agent which exists as a white crystalline powder. it is very soluble in water and is used in flour and dough.

Подготовка

Calcium Bromate may be prepared by reacting calcium hydroxide with sodium bromate or by reacting calcium sulfate with barium bromate:
Ca(OH)2＋ 2NaBrO3→Ca(BrO3)2＋ 2NaOH
CaSO4 (aq)＋ Ba(BrO3)2 (solid)→Ca(BrO3)2 (aq)＋ BaSO4 (solid)
Of the two methods, the latter seems to be more stable one since the temperature can be as high as 80°C in solution. The usual product is a monohydrate, Ca(BrO3)2·H2O.
Calcium bromate monohydrate occurs as colorless, monoclinic crystals or prismatic plates which are soluble in water. This salt loses its water below 180°C and decomposes above that temperature to form calcium bromide plus oxygen.