Synonyms

Magnesium hydrogen carbonate, magnesium subcarbonate (light or heavy), hydrated basic magnesium carbonate, magnesium carbonate hydroxide

Definition

Chemical name

Magnesium carbonate hydroxide hydrated

Einecs

235-192-7

Chemical formula

4MgCO₃Mg(OH)₂5H₂O

Molecular weight

485

Assay

Mg content not less than 40,0 % and not more than 45,0 % calculated as MgO

Description

Light, white friable mass or bulky white powder

Identification

Practically insoluble in water. Insoluble in ethanol

Purity

Acid insoluble matter

Not more than 0,05 %

Water soluble matter

Not more than 1,0 %

Calcium

Not more than 1,0 %

Arsenic

Not more than 3 mg/kg

Lead

Not more than 10 mg/kg

Mercury

Not more than 1 mg/kg