Silica Sand (SiO2) High Purity Foundry Grade


Silica is non-combustible, colorless or white and is in a crystal form. High purity sand, almost entirely composed of silica, is a major industrial commodity. Silica sand products are marketed in a wide range of grades, including extremely fine grades known as flours.

The chemical compound silicon dioxide, also known as silica (from the Latin silex), is an oxide of silicon with a chemical formula of SiO2 and has been known for its hardness since antiquity. Silica is most commonly found in nature as sand or quartz, as well as in the cell walls of diatoms. Silica is the most abundant mineral in the Earth’s crust.

PreRish Tri is manufacturing several forms of Silica Sand including glass, crystal, gel, aerogel, fumed silica (or phylogenic silica), and colloidal silica (e.g. Aerosil). In addition, Silica nanosprings are produced by the vapor-liquid-solid method at temperatures as low as room temperature.


Chemical Name:  Silica

Chemical Formula:  SiO2

Chemical Properties:

Silicon dioxide is formed when silicon is exposed to oxygen (or air). A very thin layer (approximately 1 nm or 10 Å) of so-called ‘native oxide’ is formed on the surface when silicon is exposed to air under ambient conditions. Higher temperatures and alternate environments are used to grow well-controlled layers of silicon dioxide on silicon.

Silicon dioxide has covalent bonding and forms a network structure (also known as lattice or continuous).

PreRish Tri Offers Various Types Silica Sand (SiO2):

  1. Aerogel
  2. Amorphous
  3. Colloidal
  4. Diatomaceous
  5. Food grade
  6. Fumed
  7. Fused
  8. Hydrophilic
  9. Hydrophobic
  10. Novaculite
  11. Precipitated
  12. Quartz
  13. Synthetic
  14. Traction sand

MIL-S-14760 (AR) specification (milspec. cancelled on 4 FEB 03)

SAE- AMS3755B (fumed, white & amorphous powder)

Silicon dioxide is attacked by hydrofluoric acid (HF). HF is used to remove or pattern silicon dioxide in the semiconductor industry.

Physical Properties:

Silica sand products are available in a wide range of grades, including extremely fine grades known as flours. Send READE your desired specification.

Typical Applications:

Abrasive cleaners and inert fillers, hydraulic fracturing, etc


Molecular Weight (g/mol.) 60.1
Apparent Density (g/cm3)
Melting Point (°C) melting point depends on the crystalline form (~ 3110)
Boiling Point (°F) 4046
Surface Area (m2/g)
Solubility In Water Insoluble
Mohs Hardness @20°C
Specific Gravity (g/cc) specific gravity depends on the crystalline form (~2.20)
Particle Shape
Screen Analysis
Crystallography usually silicon tetrahedral