Zirconium(IV) silicate

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Zirconium(IV) silicate
Names
Preferred IUPAC name
Zirconium(IV) silicate
Systematic IUPAC name
Zirconium(4+) silicate
Other names
Zircon

Zirconium(4+) orthosilicate

Zirconium(IV) orthosilicate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.030.216 Edit this at Wikidata
EC Number
  • 233-252-7
MeSH Zircon
UNII
  • InChI=1S/O4Si.Zr/c1-5(2,3)4;/q-4;+4 ☒N
    Key: GFQYVLUOOAAOGM-UHFFFAOYSA-N ☒N
  • [Zr+4].[O-][Si]([O-])([O-])[O-]
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
98.3 J/mol K
−2044 kJ/mol
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
1
0
1
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, 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.

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]

  1. ^ P. Patnaik (2002). Handbook of inorganic chemicals. McGraw-Hill Professional. p. 1002. ISBN 0-07-049439-8.