tungsten trioxide

Also known as tungsten(VI) oxide

chemical compound

Chemical data

Formula: O3W
Molecular weight: 231.84 g/mol
IUPAC name: trioxotungsten
SMILES: O=[W](=O)=O
InChIKey: ZNOKGRXACCSDPY-UHFFFAOYSA-N
Polar surface area: 51.2 Å²
H-bond donors: 0
H-bond acceptors: 3
Formal charge: 0

via PubChem

Wikidata facts

Mass: 231.935675
Image: TungstenOxideSmall.jpg

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Article

Tungsten(VI) oxide, also known as tungsten trioxide is a chemical compound of oxygen and the transition metal tungsten, with formula WO3. The compound is also called tungstic anhydride, reflecting its relation to tungstic acid H2WO4. It is a light yellow crystalline solid.

Tungsten(VI) oxide occurs naturally in the form of hydrates, which include minerals: tungstite WO3·H2O, meymacite WO3·2H2O, and hydrotungstite (of the same composition as meymacite, however sometimes written as H2WO4). These minerals are rare to very rare secondary tungsten minerals.