Silicon dioxide
ALDRICH/637246 - nanopowder (spherical, porous), 5-20 nm particle size (TEM), 99.5% trace metals basis
Synonym: Silica; Nanosilica; Silicon dioxide
CAS Number: 7631-86-9
Empirical Formula (Hill Notation): O2Si
Molecular Weight: 60.08
EC Number: 231-545-4
MDL Number: MFCD00011232
Linear Formula: SiO2
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 637246-50G
| assay | 99.5% trace metals basis |
| bp | 2230 °C (lit.) |
| bulk density | 0.068 g/mL |
| density | 2.2-2.6 g/mL at 25 °C |
| form | nanopowder (spherical, porous) |
| InChI | 1S/O2Si/c1-3-2 |
| InChI key | VYPSYNLAJGMNEJ-UHFFFAOYSA |
| mp | >1600 °C (lit.) |
| particle size | 5-20 nm (TEM) |
| SMILES string | O=[Si]=O |
| surface area | 590-690 m2/g , TEM |
| Application: | 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-dimethano • 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. |
| General description: | Porous silicon dioxide nanopowder, also known as silica or silicon dioxide is a fine, white powder with a porous structure. It is composed of nanoscopic particles of silicon dioxide, 5-20 nm in size and has a high surface area due to its porous structure. |
| Packaging: | 250, 500 g in poly drum |
| Packaging: | 50 g in glass bottle |
| RIDADR | NONH for all modes of transport |
| WGK Germany | nwg |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 99.5% trace metals basis |
| bp | 2230 °C (lit.) |
| mp | >1600 °C (lit.) |
| Density | 2.2-2.6 g/mL at 25 °C |
| UNSPSC | 12352302 |