a) Silica is noncombustible, colorless or white, tasteless "crystals". It occurs naturally in the crystalline and amorphous forms. The specific gravity and melting point depend on the crystalline form. Silica is known to occur in 17 crystalline phases or modes and five amorphous phases.
b) Silica aerogel is the most common type of aerogel and the most extensively studied and used. It is a silica-based substance, derived from silica gel. The world's lowest-density solid is a silica nanofoam at 1 mg/cm3, which is the evacuated version of the record-aerogel of 1.9 mg/cm3. The density of air is 1.2 mg/cm3.
c) Silica aerogel strongly absorbs infrared radiation. It allows the construction of materials that let light into buildings but trap heat for solar heating.
d) It has remarkable thermal insulative properties, having an extremely low thermal conductivity: from 0.03 W/m·K down to 0.004 W/m·K, which correspond to R-values of 14 to 105 for 3.5 inch thickness. For comparison, typical wall insulation is 13 for 3.5 inch thickness. Its melting point is 1,473 K (1,200 °C or 2,192 °F).
e) Silica aerogel holds 15 entries in Guinness World Records for material properties, including best insulator and lowest-density solid.
Silicon Dioxide / Silica Types Available:
f) Food grade
l) Traction sand
m) MIL-S-14760 (AR) specification (milspec. cancelled on 4 FEB 03)
n) SAE- AMS3755B (fumed, white & amorphous powder)
Coarse powder, Fine powder, Nanoparticles, Sand, Crystals, Fibers, Gel, and Rod
Silicon Dioxide / Silica Typical Applications:
a) Filler for paints, plastic, epoxy, glassmaking, papers, seed germination, cosmetics, automotive, storage, wood & metal primer, water retardation, powder coating, structural concrete forms, masonry treatment, chromatographic column treatment, wood treatment, powder metal molding, etc
b) Silica Industry Outlook: "US specialty silica demand is projected to increase 3.7 percent annually through 2013, led by healthy advances in the large precipitated silica segment. The tire rubber market will expand at an above-average rate, reflecting greater us of precipitated silica in the production of “green” tires, which offer increased fuel efficiency and enhanced performance." Source: Freedonia Group
Silicon Dioxide / Silica Packaging:
a) Jars, pails, drums, multiply paper bags, bulk bags and fiberboard containers.
b) For further information on packaging options Contact READE.
Silicon Dioxide / Silica TSCA (SARA Title III) Status:
Listed. For further information please call the E.P.A. at 1.202.554.1404 or the National Institute for Occupational Safety and Health at 1.800.35-NIOSH.
Silica Health & Safety Information:
a) Please visit these two respected websites OSHA & NIOSH for valuable health & safety information.
b) Silica sand is very hazardous. Limit the use of silica sand wherever possible. For types of abrasive used in place of silica go to the Occupational Safety and Health Administration’s (OSHA) homepage at : <http://www.osha.gov/>, Select ‘S’ for Silica