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14304

Sigma-Aldrich

Sodium tungstate dihydrate

purum, ≥99%

Sinonimo/i:

Tungstic acid sodium salt dihydrate

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About This Item

Formula condensata:
Na2WO4 · 2H2O
Numero CAS:
10213-10-2
Peso molecolare:
329.85
Numero CE:
236-743-4
Numero MDL:
MFCD00149190
Codice UNSPSC:
12352300
ID PubChem:
329750444
Saggio:
≥99%
Stato:
crystalline

Grado

purum

Saggio

≥99%

Stato

crystalline

Impiego in reazioni chimiche

reagent type: catalyst
core: tungsten

Impurezze

≤0.1% free alkali (as NaOH)

pH

9-11.5 (20 °C, 100 g/L)

Punto di fusione

698 °C (lit.)

Anioni in tracce

chloride (Cl-): ≤100 mg/kg
sulfate (SO42-): ≤200 mg/kg

Cationi in tracce

Fe: ≤20 mg/kg
Mo: ≤100 mg/kg

Stringa SMILE

O.O.[Na+].[Na+].[O-][W]([O-])(=O)=O

InChI

1S/2Na.2H2O.4O.W/h;;2*1H2;;;;;/q2*+1;;;;;2*-1;
WPZFLQRLSGVIAA-UHFFFAOYSA-N

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Pittogrammi

Exclamation mark
GHS07

Avvertenze

Warning

Indicazioni di pericolo

H302

Classi di pericolo

Acute Tox. 4 Oral

Codice della classe di stoccaggio

13 - Non Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

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Lot/Batch Number

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Infrared absorption and differential scanning calorimetry studies of sodium tungstate dihydrate glasses containing iron oxide.
Al-Hawery AS.
Journal of Physics and Chemistry of Solids, 58(9), 1325-1328 (1997)
Luminescence and absorbance of highly crystalline CaMoO4, SrMoO4, CaWO4 and SrWO4 nanoparticles synthesized by co-precipitation method at room temperature.
Thongtem T, et al.
J. Alloy Compounds, 506(1), 475-481 (2010)
Alexander V Agafonov et al.
Molecules (Basel, Switzerland), 24(18) (2019-09-22)
The electrorheological (ER) effect was experimentally observed in dielectric suspensions containing tungsten oxide (WO3) modified with surfactant molecules (sodium dodecyl sulfate (SDS) and dodecylamine (DDA)) in electric fields up to several kilovolts per millimeter. The dielectric properties of WO3 suspensions
Delia Zafra et al.
FEBS letters, 587(3), 291-296 (2012-12-25)
Tungstate treatment ameliorates experimental diabetes by increasing liver glycogen deposition through an as yet unidentified mechanism. The signalling mechanism of tungstate was studied in CHOIR cells and primary cultured hepatocytes. This compound exerted its pro-glycogenic effects through a new G-protein-dependent
Gustavo S Guandalini et al.
Chemical research in toxicology, 24(4), 488-493 (2011-03-08)
Heavy metal tungsten alloys have replaced lead and depleted uranium in many munitions applications, due to public perception of these elements as environmentally unsafe. Tungsten materials left in the environment may become bioaccessible as tungstate, which might lead to population
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