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Merck
CN

377341

Sodium metatungstate hydrate

powder

Synonym(s):

Sodium polytungstate hydrate

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About This Item

Linear Formula:
3Na2WO4 · 9WO3 · xH2O
CAS Number:
Molecular Weight:
2968.00 (anhydrous basis)
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12161600
EC Number:
412-770-9
MDL number:
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form

powder

Quality Segment

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

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


Pictograms

Exclamation markCorrosion

Signal Word

Danger

Hazard Codes

Precautionary Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1

Storage Class

11 - Combustible Solids

WGK

WGK 2

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

dust mask type N95 (US), Eyeshields, Gloves



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