| Customization: | Available |
|---|---|
| CAS No.: | 112945-52-5 |
| Formula: | O2si |
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CAS 112945-52-5 200 m2/g Specific surface area Silica, fumed for making optical glass
| Silica, fumed Basic information | |
| Product Name: | Silica, fumed |
| CAS: | 112945-52-5 |
| MF: | O2Si |
| MW: | 60.08 |
| EINECS: | 231-545-4 |
| Mol File: | 112945-52-5.mol |
| Silica, fumed Chemical 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 258ºC (pH 7). |
| form | powder |
| Specific Gravity | 2.2 |
| Hydrolytic Sensitivity | 5: forms reversible hydrate |
| CAS DataBase Reference | 112945-52-5(CAS DataBase Reference) |
| EPA Substance Registry System | Silica, amorphous, fumed, cryst.-free (112945-52-5) |
| The nitrogen adsorption specific surface area/(m2/g) | 200±30 |
| 45μm screenings/(mg/kg) ≤ | 250 |
| Loss on ignition/% ≤ | 2.5 |
| Silica content/% ≥ | 99.8 |
| Suspension PH | 3.7~4.5 |
| Al2O3 content/(mg/kg) ≤ | 400 |
| TiO2 content/(mg/kg) ≤ | 200 |
| Fe2O3 content/(mg/kg) ≤ | 30 |
| Carbon content/% ≤ | 0.2 TO SIO2 |
| Chloride content/(mg/kg) ≤ | 250 |
| 105ºC volatiles/% ≤ | 3 |
| Tap density /(g/dm3) | 30~60 |
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