Names
IUPAC name Sodium tungstate
Identifiers
CAS Registry Number 13472-45-2
PubChem 26052
RTECS number YO7875000
Properties
Chemical formula Na2WO4
Molar mass 293.82 g·mol−1
Appearance white rhombohedral crystals
Density 4.179 g/cm3 (anhydrous)
3.25 g/cm3 (dihydrate)
Melting point 698 °C (1,288 °F; 971 K)
Solubility in water
57.5 g/100 mL (0 °C)
74.2 g/100 mL (25 °C)
96.9 g/100 mL (100 °C)
Solubility slightly soluble in ammonia insoluble in alcohol, acid
Structure
Crystal structure rhombic (anhydrous)
orthorhombic (dihydrate)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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