Zirconium tungstate

Post Date:
May 11,2017
Expiry Date:
May 11,2018
Detailed Description:
Cas No. :16853-74-0 Zirconium tungstate (Zr(WO4)2) is a metal oxide with unusual properties. The phase formed at ambient pressure by reaction of ZrO2 and WO3 is a metastable cubic phase, which has negative thermal expansion characteristics, namely it shrinks over a wide range of temperatures when heated. In contrast to most other ceramics exhibiting negative CTE (coefficient of thermal expansion), the CTE of ZrW2O8 is isotropic and has a large negative magnitude (average CTE of -7.2x10−6K−1) over a wide range of temperature (-273°C to 777°C). A number of other phases are formed at high pressures.
CAS Registry Number:
16853-74-0
Synonyms:
Tungsten zirconium oxide (W2ZrO8);Ditungsten zirconium octaoxide;oxygen(-2) anion; tungsten; zirconium(+4) cation;zirconium(4+) bis[dioxido(dioxo)tungsten];
Molecular Formula:
O₈W₂Zr
Molecular Weight:
586.8992
Molecular Structure:

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