7631-86-9 Silicon dioxide
Name: Silicon dioxide
Synonyms:
Silicon dioxide, chemically prepared;Silica (SiO2);Amorphous silica;Silica slurry;Silica, amorphous, fumed;Silicon dioxide (amorphous);
CAS Number:7631-86-9
Molecular Formula:SiO2
Molecular Weight:60.09
EINECS:231-545-4
Density:2.6
Boiling Point:
Flash Point:n/a
Safety Description:The pure unaltered form is considered a nuisance dust. Some deposits contain small amounts of crystalline quartz and are therefore fibrogenic. When diatomaceous earth is calcined (with or without fluxing agents) some silica is converted to cristobalite and is therefore fibrogenic. Tridymite has never been detected in calcined diatomaceous earth. See also SILICA, AMORPHOUS FUME; SILICA, AMORPHOUS FUMED; SILICA, CRYSTALLINE; SILICA, CRYSTALLINE–CRISTOBALITE; SILICA, CRYSTALLINE–QUARTZ; SILICA, CRYSTALLINE–TRIDYMITE; SILICA FLOUR; SILICA, FUSED; SILICA, GEL and AMORPHOUS–PRECIPITATED.
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