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SILICOTUNGSTIC ACID AR
Tungstosilicic acid hydrate
MSDS
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COAs
Packings
25 g
(00025)
100 g
(00100)
Print friendly version
Article No.
05726
Grade
AR
Purity
99.5%
CAS No.
12027-43-9
Molecular Formula
H
4
(SiW
1
2
O
4
0
)xH
2
O
Molecular Weight
2878.17 (anhydrous basis)
H.S. Code
2811.1990
Shelf Life
60 Months
Physical Properties
Physical state at 20 °C
Solid
Colour
Slight yellow
Odour
Odorless
pH value
Acidic
Melting point/ Freezing point [°C]
25°C
Density [g/cm3]
4.5
Solubility in water [% weight]
Soluble in water
Specifications
Appearance
Slightly yellow colored powder
Assay
Min 99.5%
Chloride (Cl)
Max 0.001%
Sulphate (SO4)
Max 0.005%
Total nitrogen (N)
Max 0.002%
Heavy metal (as Pb)
Max 0.002%
Iron (Fe)
Max 0.001%
Sodium (Na)
Max 0.02%
Potassium (K)
Max 0.02%
Loss on ignition (at 750°C)
Max 16.0%
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338
Revision Date:
09-Nov-2013
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SILICOTUNGSTIC ACID