1.00659
Tungstosilicic acid hydrate
for analysis EMSURE®
Synonym(s):
Tungstosilicic acid hydrate, Silicotungstic acid, Wolframosilicic acid
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About This Item
Quality Level
product line
EMSURE®
form
solid
impurities
≤20 ppm Total nitrogen (N)
loss
≤16% loss on ignition, 750 °C
solubility
water: soluble at 20 °C
bulk density
200‑500 kg/m3
anion traces
chloride (Cl-): ≤20 ppm, sulfate (SO42-): ≤50 ppm
cation traces
Fe: ≤10 ppm, K: ≤200 ppm, Na: ≤200 ppm, heavy metals (as Pb): ≤20 ppm
storage temp.
15-25°C
SMILES string
[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[W](=O)(=O)=O.[Si](O)(O)(O)O.O
InChI
1S/H4O4Si.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h1-4H;1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
InChI key
ACTPFSYIGLFGLY-UHFFFAOYSA-N
Analysis Note
Chloride (Cl): ≤ 20 ppm
Sulphate (SO₄): ≤ 50 ppm
Total nitrogen (N): ≤ 20 ppm
Heavy metals (as Pb): ≤ 20 ppm
Fe (Iron): ≤ 10 ppm
K (Potassium): ≤ 200 ppm
Na (Sodium): ≤ 200 ppm
Loss on ignition (750 °C): ≤ 16 %
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Storage Class
13 - Non Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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