PRODUCTS
Fumed silica
Classification：
INTRODUCTION
PRODUCT DETAILS
Product name: Fumed silica, also known as white carbon black
Molecular formula:SiO2
Product standard: GB/T 20020-2013
Product name
| Project | Requirements (Category A) |
| Outward appearance | Fluffy white powder |
| Nitrogen adsorption specific surface area/(m2/g) | Typical value ±10 |
| Ignition loss/% | ≤1.5 |
| Silica content/% | ≥99.9 |
| Total aluminum content/(mg/kg) | ≤20 |
| Total titanium content/(mg/kg) | ≤20 |
| Total iron content/(mg/kg) | ≤20 |
| Carbon content/% | ≤0.2 |
| Chloride content/(mg/kg) | ≤50 |
| PH value of suspended solids | 3.9~4.5 |
| Volatile matter at 105℃/% | ≤1.5 |
| Tap density/(g/dm3) | 30~60 |
| 45um sieve residue/(mg/kg) | ≤100 |
Uses: Mainly used in tires, translucent and highly transparent rubber products and rubber soles.
Notice:
Fumed silica has strong water absorption, and the product should be moisture-proof and pollution-proof.
Packaging, storage and transportation:
1. Packed with more than three layers of kraft paper valve pockets, and automatically packed with a vacuum packaging machine;
2. The net content of each bag is (10±0.1) kg;
3. The valve opening of the paper bag is neatly folded, and the whole bag is a regular and full rectangular parallelepiped, and the bag does not deform significantly under the action of slight external force;
4. The product stacking layer limit is 20 layers. When transported in the form of pallets, stack 10 layers, and use stretch film for integral winding and sealing;
5. The product should be stored and transported as non-dangerous goods, and should be stored in a cool and dry place. Pay attention to moisture and pollution during transportation.
Keywords：
Fumed silica
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