1、Chemical Name: Magnesium Carbonate
2、Molecular Formula: MgCO₃;4MgCO₃·Mg(OH)₂·5H₂O;MgCO₃·H₂O
3、Molecular Weight: Anhydrous: 84.32; Basic type: 485.706; Monohydrate: 102.34
4、CAS: Anhydrous: 546-93-0; Basic type: 39409-82-0; Monohydrate: 23389-33-5
5、Character: It's white powder. Odorless and good fluidity, melting point 350℃. It is stable in air, easily decomposed into carbon dioxide and magnesium oxide when heated to 700℃, almost insoluble in water, but causes a slight alkaline reaction in water. Insoluble in ethanol, can be dissolved by dilute acid and foamed.
6、Usage: It can be used as nutrient, flour treatment agent, anti-caking agent and leavening agent. It could also be used in wheat powder and gum ingredients.
7、Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
| Specification | GB 25587-2010 | FCC VII |
| Content (MgO),w/% | 40.0-44.0 | 40.0-43.5 |
| Acid-Insoluble substances,w/%≤ | 0.05 | 0.05 |
| Heavy metal (as Pb),mg/kg≤ | 10.0 | — |
| CaO,w/%≤ | 0.6 | 0.6 |
| Soluble salts,w/%≤ | 1.0 | 1.0 |
| Lead (Pb),mg/kg≤ | — | 2.0 |
| Arsenic (As),mg/kg≤ | 3.0 | — |


