31624

Silicon dioxide

acid washed and calcined, Analytical Reagent

• Synonym(s): Sand, white quartz, Quartz, Silicon dioxide
• Linear Formula: SiO₂
• CAS Number: 14808-60-7
• Molecular Weight: 60.08
• EC Number: 238-878-4
• MDL number: MFCD00011232
• UNSPSC Code: 12352300
• PubChem Substance ID: 57648587
• NACRES: SB.52

Properties

• form: granular
• quality: acid washed and calcined, Analytical Reagent
• impurities: ≤0.01% in HCL soluble iron (Fe); ≤0.2% soluble in HCl
• loss: ≤0.10% loss on ignition, 900 °C
• granulation: 0.1-0.3 mm, coeff var ≥96%
• anion traces: chloride (Cl^-): ≤50 mg/kg
• SMILES string: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChI key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Description

General description

Study of silicon-silicon dioxide structure at liquid nitrogen temperature by electron spin resonance spectra has been investigated. Diffusion coefficient and solubilities of several metals (Ag, Cu, Au, Pd, and Ti) in silicon dioxide have been discussed. Microcontact printing of self-assembled monolayers (SAMs) of alkylsiloxanes on the surface of silicon dioxide has been reported. Separation and characterization of silicon dioxide (SiO₂) nanostructures in dietary supplements marketed in products specifically targeted for women has been proposed.

Application

Silicon dioxide may be employed as insulating layer on top of the silicon in the fabrication of gold electrode, used for flow injection amperometric detection of organophosphorus (OP) nerve agents.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: nwg
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves, type N95 (US)