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Silicon dioxide

nanopowder (spherical, porous), 5-20 nm particle size (TEM), 99.5% trace metals basis

Silica, Silicon dioxide
Linear Formula:
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:


99.5% trace metals basis


nanopowder (spherical, porous)

particle size

5-20 nm (TEM)

surface area

590-690 m2/g (TEM)


2230 °C (lit.)


>1600 °C (lit.)


2.2-2.6 g/mL at 25 °C

bulk density

0.068 g/mL

SMILES string




InChI key


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Silicon dioxide finds applications in various fields, ranging from catalysis to composite synthesis. Some major studies are listed here:
  • Pickering emulsion polymerization using a silicon dioxide nanoparticle stabilizer to form molecularly imprinted polymers for steroid recognition.
  • Mesoporous silica is used as a catalyst support in the preparation of multiwalled carbon nanotubes (MWCNTs).
  • It is used as a ring opening of tetrahydrofuran-dimethanol to 1,2,6-hexanetriol.
  • It maybe used to prepare silica/brominated poly(phenylene oxide) nanocomposites membranes for CO2 seperations.
  • The composite scaffold of chitosan/chondroitin sulfate/nano-SiO2 was fabricated by lyophilization.
  • Nanocomposites preparation of silica, single-wall carbon nanotubes, and graphite nanoplatelets in an epoxy matrix have been reported.6
  • Dielectric spectroscopy study of the polystyrene/nanosilica model system has been studied.
  • PMMA SiO2 nanocomposites were reported to be synthesized.


250, 500 g in poly drum
50 g in glass bottle

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Effect of surface modification of silica nanoparticles on toxicity and cellular uptake by human peripheral blood lymphocytes in vitro
Lankoff A, et al.
Nanotoxicology, 7(3), 235-250 (2011)
Catalyst studies on the ring opening of tetrahydrofuran-dimethanol to 1, 2, 6-hexanetriol
Buntara T, et al.
Catalysis Today, 210, 106-116 (2013)
Laura Rubio et al.
Particle and fibre toxicology, 16(1), 40-40 (2019-10-31)
Amorphous silica nanoparticles (SiO2 NPs) have been regarded as relatively benign nanomaterials, however, this widely held opinion has been questioned in recent years by several reports on in vitro and in vivo toxicity. Surface chemistry, more specifically the surface silanol
Carbon nanotube bundles self-assembled in double helix microstructures.
Cervantes-Sodi F, et al.
Carbon, 50(10), 3688-3693 (2010)
Molecularly imprinted polymer beads prepared by pickering emulsion polymerization for steroid recognition
Zhou T, et al.
Journal of Applied Polymer Science, 131(1) (2014)


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