Silicon Dioxide (amorphous), SiO<sub>2</sub> 99.99% 4N High Purity Powder,  MSE Supplies

Silicon Dioxide (amorphous), SiO2 99.99% 4N High Purity Powder

  • €6695

Silicon Dioxide (amorphous), SiO2, 99.99% 4N High Purity Powder 

  • Product Number: PO3702 (100 g), PO3703 (1 kg) 
  • Synonym: Silica, Silicic anhydride, Silicon dioxide amorphous, Silicon dioxide, Amorphous silica
  • Formula: SiO2
  • CAS Number: 7631-86-9 
  • Formula Weight: 60.08 g/mol
  • Density: 2.196  g/cm³ at 25°C 
  • Melting Point: 1713°C
  • Color: white powder 
  • Solubility: Insoluble in water
  • Purity: 99.99% 4N (trace metal basis) 
  • Particle Size: <300 mesh


SiO2 (Silicon Dioxide or Silica) in its amorphous form is generally exploited in semiconductors to segregate conducting of differing areas.  SiO2 has a high dielectric constant, mechanical resistance, and chemical selectivity.  This selectivity makes it a good material in microelectronics and chromatography.  Silicon Dioxide has been used in a wide range of applications such as resigns for separations, optical fibers, glasses, ceramics, and semiconductors.

Notes: More detailed product information including SDS, certificate of analysis (COA), lead time and volume pricing are available upon request. 

Product Specifications  

Trace Metal Impurities (ppm) 
















Analysis by ICP  



P.M. Dove, N. Han, A.F. Wallace, and J.J. De Yoreo. Kinetics of amorphous silica dissolution and the paradox of the silica polymorphs. PNAS, Vol 105(29), pgs 9903-9908, 2008.

A. Di Pomponio, A. Continenza, L. Lozzi, M. Passacantando, S. Santucci, and P.Picozzi. Electronic properties of crystalline and amorphous SiO2 investigated via all-electron calculations and photoemission spectroscopy. Solid State Comm. Vol. 95(5) Pgs. 313 -317, 1995