Sand Ottawa Standard 20-30 Mesh

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

Silica gel is a coherent, rigid, continuous three-dimensional network of spherical particles of colloidal microporous silica.

Odorless

Tasteless

4046 u00b0F at 760 mmHg (NIOSH, 2024)

3110 u00b0F (NIOSH, 2024)

Silica is rather poorly soluble in water and solubility is lower for the crystalline than for the amorphous morphologies. ...Solubility increases with temperature and pH and is affected by the presence of trace metals. Particle size influences the rate of solubility.

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/

0 mmHg (approx) (NIOSH, 2024)

Non-corrosive

/Non-combustible/

Opal is an amorphous hydrous silica that may contain cryptocrystalline cristobalite. Biogenic silica is defined as any silica originating in living matter (known sources include bacteria, fungi, diatoms, sponges and plants); the two most relevant biogenic silicas are those associated with fossilized diatoms and crop plants. Diatomaceous earths are the geological products of decayed unicellular organisms (algae) called diatoms. Vitreous silicas are volcanic glasses; lechaterlierites are nautral glasses produced by the fusion of siliceous material under the impact of meteorites. Fused silica is silica heated up to a liquid phase and cooled down without allowing it to crystallize. Pyrogenic or fumed silica is silica prepared by the combustion of a volatile silicon compound (usually SiCl(4)). Precipitated silica is silica precipitated from an aqueous solution. Colloidal silica is a stable dispersion of discrete, colloid-sized particles of amorphous silica in an aqueous solution. /Amorphous forms/