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Identifiers | |
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3D model (JSmol) | |
ChemSpider | |
ECHA InfoCard | 100.030.089 |
EC Number |
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PubChem CID | |
UNII | |
CompTox Dashboard (EPA) | |
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Properties | |
Mg2SiO4 | |
Molar mass | 140.693 g/mol |
Appearance | colorless crystalline solid |
Density | 3.21 g/cm3 |
Melting point | 1,890 °C (3,430 °F; 2,160 K) |
insoluble | |
Structure | |
orthorhombic | |
Thermochemistry | |
Heat capacity (C) | 119 J/mol K |
Std molar entropy (S⦵298) | 95 J/mol K |
Std enthalpy of formation (ΔfH⦵298) | −2172 kJ/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Magnesium orthosilicate is a chemical compound with the formula Mg2SiO4. [1] [2] It is the orthosilicate salt of magnesium. It exists as forsterite in nature.
Magnesium orthosilicate is made by the fusion of stoichiometric amounts of magnesium and silicon oxides at 1,900 °C (3,450 °F).