Fumed Silica
Silica is a naturally occurring mineral that is found in rocks and soil, making up a significant portion of the earth's crust. Its unique properties make it an ideal material for use in a wide variety of processes and applications, including weather forecasting and analysis.
Description
The TNN Development Limited is one of the most reliable manufacturers and suppliers of fumed silica in China. Please feel free to wholesale customized fumed silica at low price from our factory. If you have any enquiry about free sample and discount information, please feel free to email us.
Description
Product Name : FUMED SILICA
Appearance : White powder
Molecular Formula : O2Si
CAS No. : 112945-52-5
Grade Standard : Cosmetic Grade
Sio2 content : 99.9%
COA
| Test Items | Specifications | Results | ||||
| Appearance | white powder | white powder | ||||
| Whiteness | ≥93% | 98 | ||||
| Sio2 content | ≥99% | 99.9 | ||||
| PH value | 3.5-5.5 | 4.0 | ||||
| Particle size | 14-20nm | 14 nm | ||||
| Heating loss 105°C 2h % | ≤1.0% | 0.9 | ||||
| Ignition loss 1000°C 2h % | ≤2.0% | 1.4 | ||||
| Absorption value DBP | ≥180 ml/100g | 230 | ||||
| Specific surface area | ≥175 m2/g | 202 | ||||
| Heavy metal (pb) % | ≤0.003 | ＜0.001 | ||||
| Arsenic % | ≤0.0003 | ＜0.00001 | ||||
| Sodium sulfate % | ≤0.4 | ＜0.02 | ||||
| Lead content % | ≤0.001 | ＜0.0001 | ||||
| Total Fe mg/kg | ≤500 | 149 | ||||
| Total copper mg/kg | ≤20 | 1 | ||||
| Total Mn mg/kg | ≤30 | 3 | ||||
| Conclusion: | The product complies with the standard above. | |||||
Application
One of the primary uses of meteorological silica is as a desiccant. This means that it is used to absorb moisture and prevent the buildup of condensation on equipment such as weather sensors, cameras, and lenses. The silica is typically placed in small packets and placed inside the equipment to keep it dry and prevent corrosion.
Another important use of meteorological silica is as a component of glass used in weather monitoring instruments. The addition of silica to the glass helps to improve its thermal and electrical properties, making it more resistant to temperature changes and electrical interference. This makes it a critical component of instruments such as barometers, thermometers, and anemometers, which rely on highly accurate and precise measurements of atmospheric conditions.
Packing
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