377341

Sodium metatungstate hydrate

powder

• Synonym(s): Sodium polytungstate hydrate
• Linear Formula: 3Na₂WO₄ · 9WO₃ · xH₂O
• CAS Number: 314075-43-9
• Molecular Weight: 2968.00 (anhydrous basis)
• EC Number: 412-770-9
• MDL number: MFCD00150663
• UNSPSC Code: 12161600
• PubChem Substance ID: 24863221
• NACRES: NA.22

Properties

• form: powder
• composition: W, 70%
• reaction suitability: core: tungsten; reagent type: catalyst
• SMILES string: O.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O
• InChI: 1S/6Na.H2O.39O.12W/h;;;;;;1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/q6*+1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;6*-1;;;;;;;;;;;;
• InChI key: YVQUUPJGDSQKML-UHFFFAOYSA-N

Description

Application

Sodium metatungstate hydrate (NaW₁₂O₃₉ XH₂O) can be used as a precursor for the preparation of:

• Tungsten oxide (WO₃ x H₂O) nanoplates for the electrocatalytic reaction of methanol oxidation.
• Tungsten carbide (WC) based counter electrodes for dye-sensitized solar cells (DSSCs).

Suitable for sink/swim analysis

Safety Information

• Pictograms: GHS07,GHS05
• Signal Word: Danger
• Hazard Statements: H302,H318,H412
• Precautionary Statements: P273 - P280 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves