Nano fumed silica , 99.8%, than the surface area (bet): 115m2/g; particle size: 7-40nm , 112945-52-5

Synonym(s):
Silica;Silicon dioxide;Silica gel;Quartz;Sand

CAS NO.：112945-52-5

Empirical Formula: O2Si

Molecular Weight: 60.08

MDL number: MFCD01778716

EINECS: 231-545-4

PRODUCT Properties

• Melting point: >1600°C
• Density: 2.3 lb/cu.ft at 25 °C (bulk density)(lit.)
• refractive index: n20/D 1.46(lit.)
• solubility: Practically insoluble in organic solvents, water, and acids, except hydrofluoric acid; soluble in hot solutions of alkali hydroxide. Forms a colloidal dispersion with water. For Aerosil, solubility in water is 150 mg/L at 258℃ (pH 7).
• form: powder
• Specific Gravity: 2.2
• Hydrolytic Sensitivity: 5: forms reversible hydrate
• InChI: InChI=1S/O2Si/c1-3-2
• InChIKey: VYPSYNLAJGMNEJ-UHFFFAOYSA-N
• SMILES: [Si](=O)=O

Description and Uses

Synthetic Amorphous Silica has interesting thickening and thixotropic properties, and an enormous external surface area. It is produced by a vapor phase hydrolysis process using chlorosilanes or substituted silanes such as, silicon tetrachloride in a flame of hydrogen and oxygen. This material is formed and collected in a dry state. This product contains no detectable crystalline silica.

Safety

• Symbol(GHS): GHS08
• Signal word: Danger
• Hazard statements: H335-H350-H315-H319
• Precautionary statements: P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362
• Safety Statements: 24/25
• WGK Germany: 2
• RTECS: VV7310000
• TSCA: Yes
• HS Code: 28112290