Magnesiumcarbonate , MgO:45% , 13717-00-5

Synonym(s):
Magnesium carbonate;Magnesium carbonate hydrate

CAS NO.：13717-00-5

Empirical Formula: CMgO3

Molecular Weight: 84.31

MDL number: MFCD00064632

EINECS: 208-915-9

PRODUCT Properties

• Melting point: 2200 °C
• Density: 3.001 g/cm3
• storage temp.: Hygroscopic, Room Temperature, under inert atmosphere
• form: Solid
• color: White to Off-White
• Solubility Product Constant (Ksp): pKsp: 5.17
• Stability: Hygroscopic
• InChI: InChI=1S/CH2O3.Mg/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
• InChIKey: ZLNQQNXFFQJAID-UHFFFAOYSA-L
• SMILES: C([O-])([O-])=O.[Mg+2]
• CAS DataBase Reference: 13717-00-5(CAS DataBase Reference)
• EPA Substance Registry System: Magnesite (13717-00-5)

Description and Uses

Magnesium carbonate has the molecular formula of MgCO₃ and the molecular weight of 84.3145 g/mol.For the most part,Mg²⁺ forms several hydrated and basic carbonates that are stable and occur in nature.
The calcite structure of magnesium carbonate has the form wherein Mg²⁺ is surrounded by six O^2- atoms. The dihydrate composition has a triclinic structure, while the trihydrate has a monoclinic structure. References to “light” and “heavy” magnesium carbonates actually refer to the magnesium hydroxycarbonates. A space-filling structure of the anhydrous salt is seen in the above diagram where the triangular CO₃ ^2- groups are clearly visible.

Magnesium salts, heat insulation and refractory, rubber reinforcing agent, inks, glass, pharmaceuticals, dentifrice and cosmetics, free-running table salts, antacid, making magnesium citrate, filtering medium. In foods as drying agent, color retention agent, anticaking agent, carrier.