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Q What is the purpose of magnesium carbonate?

Description: What is magnesium carbonate used for? Where can magnesium carbonate be used?

Answer Magnesium carbonate can be used as a flour treatment agent in my country. The maximum use amount is 5.0g/kg; the maximum use amount in wheat flour is 1.5g/kg (in flour). 
; Used in the manufacture of drugs for neutralizing gastric acid and treating duodenal ulcer; used in medicine and rubber industry; used in the manufacture of magnesium salts, magnesium oxide, fireproof coatings, inks, glass, toothpaste, rubber fillers, etc., used in food 
Flour improver, bread leavening agent, etc.

Q How is the water solubility of magnesium carbonate?

Description: What is the solubility of magnesium carbonate in water?

Answer The water solubility of magnesium carbonate is: g MgCO3/100g solution at CO2 pressure, kPa, 18°C: 3.5 (203), 4.28 (405), 5.90 (1010), 7.49 (1820), 7.49 (5670); at 0 
°C 8.58 (3445), at 60°C 5.56 (3445); soluble acids; insoluble alcohol [HAW93] [KIR81]

Q Is magnesium carbonate precipitated?

Description: Is magnesium carbonate precipitated?

Answer Magnesium carbonate has relatively low solubility in water and is slightly soluble in water. After adding a small amount of magnesium carbonate to the solution, there will be no solid remaining after stirring, but a slight excess will cause precipitation. Magnesium carbonate will be in a weakly acidic solution. 
Will decompose to produce carbon dioxide. 
Even magnesium carbonate solution will produce magnesium hydroxide and carbon dioxide when heated (softening of hard water)