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84880 Sigma-Aldrich

Silicon dioxide

purum p.a., acid purified

Synonym: Cristobalite, Quartz, Sand, Silica

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Properties

Related Categories Adsorbents, Filter Aids and Drying Agents, Essential Chemicals, Other Drying Agents, Research Essentials
Quality Level   100
grade   purum p.a.
form   powder or crystals
quality   acid purified
loss   ≤0.1% loss on ignition
refractive index   n20/D 1.544 (lit.)
particle size   40-200 mesh
mp   1610 °C (lit.)
density   2.6 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤200 mg/kg
cation traces   Ca: ≤50 mg/kg
  Cd: ≤50 mg/kg
  Co: ≤50 mg/kg
  Cu: ≤50 mg/kg
  Fe: ≤100 mg/kg
  K: ≤100 mg/kg
  Na: ≤100 mg/kg
  Ni: ≤50 mg/kg
  Pb: ≤50 mg/kg
  Zn: ≤50 mg/kg
SMILES string   O=[Si]=O
InChI   1S/O2Si/c1-3-2
InChI key   VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Description

General description

Silicon dioxide is one of the important constituents of sedimentary rock bauxite, basalt fibers and ceramic fibers. It is added to cement for improving the hydraulic properties of cement.

may contain dark particles

Application

Silicon dioxide may be employed in the preparation of calcium silicide.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
nwg
RTECS 
VV7328000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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