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Inorganic Acids

Silicotungstic Acid

RA002298 CAS 12027-43-9 AR

Identity

Product code
RA002298
CAS number
12027-43-9
Grade
AR
Purity
99.5%
Molecular formula
H4(SiW12O40)xH2O
Molecular weight
2878.17 (anhydrous basis)

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour Slight yellow —
Odour Odorless —
pH value Acidic —
Density [g/cm3] 4.5 g/cm3 g/cm3
Solubility in water [% weight] Soluble in water —

These are recorded catalogue property values. Product specification limits, where available, are listed under Specifications.

Specifications

ParameterSpecificationUnit
Appearance Slightly yellow colored powder —
Loss on ignition (750 °C) Max 16.0 % %
Assay Min 99.5 % %
Chloride (Cl) Max 0.001 % %
Sulphate (SO4) Max 0.005 % %
Total nitrogen (N) Max 0.002 % %
Heavy metal Max 0.002 % %
Iron (Fe) Max 0.001 % %
Sodium (Na) Max 0.02 % %
Potassium (K) Max 0.02 % %

Packaging

Pack size SKU
25 g RA002298-PK-25G
100 g RA002298-PK-100G