740 High Pore Volume Amorphous Silica in Coating
High Surface Area, High Pore Volume, Good Matting
Chemical Properties
White powder forms superfine silica, which is made by specific sol-gel method process. Amorphous Silica can be dissolved by NaOH, HF. Other kinds of acid, water and organic solvents cannot dissolve the product. Resistance to high temperature, no combustion, good insulation, odourless and good extinction properties
Specifications
| Items | Specification |
| Appearance | White Powder |
| BET specific surface area m2/g | 300-380 |
| SiO2 % Min | 99 |
| Heating Loss at 105°C 2h % Max | 5.0 |
| Ignition Loss at 1000°C 2h% Max | 7.0 |
| pH Value (5% aqueous suspension) | 5.0-7.0 |
| DBP absorption Value cm³/g | 2.0-3.5 |
| Grind µm Min Max | 21 |
| Total Fe mg/kg Max | 200 |
| Medium Size(D50) µm | 4.0-6.0 |
| Whiteness Min | 94 |
Application
740 Amorphous Silica is especially used for wood paint,metal surface,leather,high-end furniture and decorative plates. It has high transparency; antiyellowing, good extinction properties.
Equivalent type
White Carbon Black, Amorphous Silica, Precipitated Silica, white carbon black, flatting agent, Matting agents, silica matting agent
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