Zirconium(IV) silicate
Chemical compound, a silicate of Zirconium / From Wikipedia, the free encyclopedia
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Zirconium silicate, also zirconium orthosilicate, ZrSiO4, is a chemical compound, a silicate of zirconium. It occurs in nature as zircon, a silicate mineral. Powdered zirconium silicate is also known as zircon flour.
Quick Facts Names, Identifiers ...
Names | |
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Preferred IUPAC name
Zirconium(IV) silicate | |
Systematic IUPAC name
Zirconium(4+) silicate | |
Other names
Zircon Zirconium(4+) orthosilicate | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.030.216 |
EC Number |
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MeSH | Zircon |
PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
O4SiZr | |
Molar mass | 183.305 g·mol−1 |
Appearance | Colourless crystals |
Density | 4.56 g cm−3 |
Melting point | 1,540 °C (2,800 °F; 1,810 K) (decomposes) |
Structure | |
tetragonal | |
Thermochemistry | |
Heat capacity (C) |
98.3 J/mol K |
Std enthalpy of formation (ΔfH⦵298) |
−2044 kJ/mol |
Hazards | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Safety data sheet (SDS) | MSDS |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Zirconium silicate is usually colorless, but impurities induce various colorations. It is insoluble in water, acids, alkali and aqua regia. Hardness is 7.5 on the Mohs scale.[1]