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Tungstic acid

Basic information Physical Properties Uses Preparation Safety Related Supplier
Tungstic acid Basic information
Tungstic acid Chemical Properties
Safety Information
  • Risk Statements 36/37/38
  • Safety Statements 24/25
  • WGK Germany 3
  • RTECS YO7840000
  • TSCA Yes
  • HS Code 28259011
MSDS
Tungstic acid Usage And Synthesis
  • Physical PropertiesYellow amorphous powder; density 5.59 g/cm3; decomposes at 100°C; insoluble in water and most acids; soluble in hydrofluoric acid, caustic alkalies and ammonia solution. Freshly prepared tungstic acid containing a molecule of water of crystallization is moderately soluble in water.
  • UsesTungstic acid is used in preparing tungsten metal and many tungsten compounds. Also, it is a mordant for textiles.
  • PreparationTungstic acid is obtained as an intermediate in the recovery of tungsten from its minerals, scheelite and wolframite (See Tungsten). Also, the tungstic acid may be prepared by heating sodium tungstate with sulfuric acid or hydrochloric acid:
    Na2WO4 + 2HCl → H2WO4 + 2NaCl
    Na2WO4 + H2SO4 → H2WO4 + Na2SO4
  • Chemical Propertieslight yellow powder
  • Physical propertiesYellow amorphous powder; density 5.59 g/cm3; decomposes at 100°C; insoluble in water and most acids; soluble in hydrofluoric acid, caustic alkalies and ammonia solution. Freshly prepared tungstic acid containing a molecule of water of crystallization is moderately soluble in water.
Tungstic acid Preparation Products And Raw materials
Tungstic acid(7783-03-1)Related Product Information
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