Tungstic(VI) acid (H2WO4)-Powder

Characteristic

 

Tungstic acid refers to hydrated forms of tungsten trioxide, WO3. The solid-state structure of WO3·H2O consists of layers of octahedrally coordinated WO5(H2O) units where 4 vertices are shared. The dihydrate has the same layer structure with the extra H2O molecule intercalated.The monohydrate is a yellow solid and insoluble in water. The classical name for this acid is 'acid of wolfram'. Salts of tungstic acid are tungstates.




Chemical formula:H2WO4

Molar mass:249.853 g/mol

Appearance:yellow powder

Density:5.59 g/cm3

Melting point:100 °C (212 °F; 373 K) (decomposes)

Boiling point:1,473 °C (2,683 °F; 1,746 K)

Solubility in water:insoluble

Solubility:soluble in HF, ammonia;slightly soluble in ethanol

  

Application

 

Applied as flavoring agent and fragrance.