This product has historical factory records. Recorded pack sizes and purity can be used as a supply reference, while project-specific availability is confirmed by inquiry.
3110 °F (NIOSH, 2024)
3110 °F
1710 °C
1716 - 1736 °C
1713 °C
Boiling Point
4046 °F at 760 mmHg (NIOSH, 2024)
4046 °F
2230 °C
Density
2.2 (NIOSH, 2024) - Denser than water; will sink
2.2 @ 25 °C
2.6
Colorless crystals or white powder; odorless and tasteless; density: 2.2-2.6; soluble in molten alkai when finely divided and amorphous /Silicon dioxide/
Density = 2.20 g/cm; Refractive index = 1.459; Surface tension = 5.200 @ 298 K (calc); Thermal conductivity = 1.37 W/m-deg K at 298 deg K ; Heat of Formation = -903.2 kJ/mol at 298 deg K; Heat Capacity = 37.94 J/mol-deg K at 298 deg K; Dielectric Constant = 3.8 /Corning 7940 fused silica/
Physical Description
Transparent to gray, odorless powder. Irritating to the skin and eyes on contact. Inhalation will cause irritation in the respiratory tract. [Note: Amorphous silica is the non-crystalline form of SiO2.]
Dry Powder; Other Solid; Dry Powder, Water or Solvent Wet Solid; NKRA; Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals
Pellets or Large Crystals; Dry Powder, Liquid; Dry Powder; Other Solid; Dry Powder, Other Solid
Water or Solvent Wet Solid; Dry Powder, Pellets or Large Crystals, Liquid; Dry Powder; Dry Powder, Pellets or Large Crystals, Water or Solvent Wet Solid; Dry Powder, Pellets or Large Crystals, Other Solid; Liquid; Water or Solvent Wet Solid, Other Solid; Liquid, Other Solid; Other Solid; Dry Powder, Water or Solvent Wet Solid; Liquid, NKRA; Dry Powder, Other Solid; NKRA; Dry Powder, Pellets or Large Crystals, Water or Solvent Wet Solid, Liquid; Pellets or Large Crystals; Dry Powder, Pellets or Large Crystals; Dry Powder, Liquid
Dry Powder; Other Solid
Appearance
Amorphous powder
Transparent to gray powder (Note: Amorphous silica is the non-crystalline form of O2Si). ... solid
Silica gel is a coherent, rigid, continuous three-dimensional network of spherical particles of colloidal microporous silica.
Transparent crystals