| 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 |
| CAS DataBase Reference |
112945-52-5(CAS DataBase Reference) |
| EPA Substance Registry System |
Silica, amorphous, fumed, cryst.-free (112945-52-5) |