Chemical Properties
Silicon dioxide/crystalline silica is a component of many mineral dusts and materials which melts to a glass at very high temperature.
Chemical Properties
Soft, porous granules resulting from natural
decomposition of siliceous rock.
Uses
Abrasive, polishing powder, filtering material,
absorbent for insecticidal chemicals, paints (inert
filler, wood filler), rubber filler, base for scouring
soaps and powders, oil-well drilling muds.
Definition
Tripoli is an abrasive composed of a siliceous substance and used for polishing.
Potential Exposure
Cristobalite is used in the manufacture of water glass, refractories, abrasives, ceramics and enamels. Quartz is used as a mineral, natural or synthetic fiber. Tridymite is used as a filtering and insulating media and as a refractory material for furnace linings. Workers are potentially exposed to crystalline silica in such industries as granite quarrying and cutting, foundry operations; metal, coal, dentistry, painting, and nonmetallic mining; and manufacture of clay and glass products.
Incompatibilities
Violent reactions with powerful oxidizers: fluorine, chlorine trifluoride; manganese trioxide; oxygen difluoride, hydrogen peroxide, etc.; acetylene; ammonia.
Toxics Screening Level
The initial threshold screening level (ITSL) for chlordane is 3μg/m3 with an annual averaging time.
Waste Disposal
Sanitary landfill
