223336
Sodium tungstate dihydrate
ACS reagent, ≥99%
Synonym(s):
Tungstic acid sodium salt dihydrate
Sign In to View Organizational & Contract Pricing.
Select a Size
Change View
About This Item
Linear Formula:
Na2WO4 · 2H2O
CAS Number:
Molecular Weight:
329.85
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
236-743-4
MDL number:
Assay:
≥99%
Grade:
ACS reagent
Form:
crystalline powder
grade
ACS reagent
Quality Level
assay
≥99%
form
crystalline powder
reaction suitability
reagent type: catalyst
core: tungsten
impurities
≤0.01% insolubles, ≤0.02 meq/g Titr. free base
pH
9-11.5 (20 °C, 100 g/L)
mp
698 °C (lit.)
anion traces
chloride (Cl-): ≤0.005%, sulfate (SO42-): ≤0.01%
cation traces
Mo: ≤0.001%, heavy metals and iron (as Pb): ≤0.001%
SMILES string
O.O.[Na+].[Na+].[O-][W]([O-])(=O)=O
InChI
1S/2Na.2H2O.4O.W/h;;2*1H2;;;;;/q2*+1;;;;;2*-1;
InChI key
WPZFLQRLSGVIAA-UHFFFAOYSA-N
General description
Sodium tungstate dihydrate is a hydrated sodium salt of tungstic acid. It participates as a catalyst in the preparation of various epoxides. Various crystallographic properties of sodium tungstate dihydrate have been analyzed.
Application
Combines with hydrogen peroxide for the oxidation of secondary amines to nitrones.
Sodium tungstate dihydrate (Na2WO4.2H2O) may be employed in the following studies:
- As a derivatization reagent for the determination of hydrogen peroxide by a fluorimetric method.
- Synthesis of N-hydroxy-desferrioxamine B, a metabolite of the microbial product desferrioxamine B.
- Preparation of highly crystalline CaMoO4, SrMoO4, CaWO4 and SrWO4 nanoparticles.
Sodium tungstate dihydrate may be used in the preparation of aqueous sols of tungsten oxide dihydrate.
Still not finding the right product?
Explore all of our products under Sodium tungstate dihydrate
signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral
Storage Class
13 - Non Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Journal of the Chemical Society. Chemical Communications, 874-874 (1984)
Maki Onoda et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 22(6), 815-817 (2006-06-15)
A simple batch method for the fluorometric determination of hydrogen peroxide using phosphine-based fluorescent reagents has been developed. A rapid, mild and selective derivatization reaction was achieved by adding sodium tungstate dihydrate to the reaction mixture of hydrogen peroxide and
Lattice constants and space group of sodium tungstate dihydrate.
Pistorius CWFT and Sharp WE.
Acta Crystallographica, 14(3), 316-317 (1961)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 223336-500G | 04061838778345 |
| 223336-100G | 04061838778338 |
| 223336-5G | 04061838778352 |