SODIUM TUNGSTATE AR (DIHYDRATE)

SODIUM TUNGSTATE AR (DIHYDRATE) SODIUM TUNGSTATE AR (DIHYDRATE)
Article No. Grade Purity Cas no. Molecular Formula Molecular Weight H.S. Code Shelf Life
S0198300100 AR 99% 10213-10-2 Na2WO4.2H2O 329.86 2841.8010
60 Months

Physical Properties

Physical state at 20 °C

Solid

Colour

White crystalline

Odour

Odorless

pH value

9 - 11.5 at 100 g/l at 20 °C

Melting Point/ Freezing point [°C]

698 °C

Density [g/cm3]

4.18

Solubility in water [% weight]

730 g/L (20°C)

Specifications

Appearance:

 White Crystalline Powder

Insoluble matter:

 Max 0.01%

Chloride (Cl):

 Max 0.005%

Sulphate (SO4):

 Max 0.01%

Arsenic (As):

 Max 0.0005%

Assay:

 99 - 101%

Total nitrogen (N):

 Max 0.001%

Free alkali (as NaOH):

 Max 0.02 meq/gm

Heavy metals and iron (as Pb):

 Max 0.001%

Molybdenum (Mo):

 Max 0.001%

Safety Information and Hazard Symbols

Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H302
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Globally Harmonized System of classification and Labelling of Chemicals (GHS)

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