Sigma-Aldrich Tungstosilicic Acid Hydrat

Quality Level

300

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 (SO₄ ^2-): ≤50 ppm

Cation Traces

Fe: ≤10 ppm
K: ≤200 ppm
Na: ≤200 ppm
heavy metals (as Pb): ≤20 ppm

Storage Temp.

15-25°C

Related Categories

Acids

Analysis Note

Identity: passes test
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 %EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany