| Customization: | Available |
|---|---|
| CAS No.: | 112926-00-8 (7631-86-9) |
| Formula: | Sio2 |
|
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Precipitated silica is commonly known as silica, also known as hydrated silicic acid, light silica, chemical expression is generally written as mSiO2-nH2O, the appearance of white highly dispersed amorphous powder, but also processed into granular as a commodity. Specific gravity is 2.319~2.653, melting point is 1750ºC. Insoluble in water and most of the acids, will become a gathering of fine particles after absorbing moisture in the air. Soluble in caustic soda and hydrofluoric acid. It is stable to other chemicals, does not decompose at high temperature and does not burn. It has high electric insulation, porous, large internal surface area, water absorption and non-toxic.
Applications
First of all, in rubber rolls, tapes, hoses and other products and plastics applications in the printing rolls, rice rolls, textile rubber rolls, paper rolls in silicon dioxide is widely used in the preparation of light-colored products and high-performance products. Steel hoses, high-strength conveyor belts, colored hoses, tapes, colored sealing products, colored high-performance cable sheaths and other products are indispensable silica. After superfine, silicon dioxide can be used as a plastic film blown film isolator and EVA plastic foam additives. Compared with commonly used inert fillers such as calcium carbonate, it can significantly improve the abrasion resistance, tear strength and hardness of the material, reduce the deformation of compression and heat shrinkage, optimize the formulation, improve performance and reduce costs.
In addition, in ink, paint and coatings, silica can be used as a thickener, thixotropic agent, dispersant, flow control agent and anti-sinking agent, can make the enterprise preparation product color and lustre is bright, increase a sense of transparency, and the print can be clear, paint film solid, when the concentration of the influence of the larger development of the diffusion model of the performance of the conduct of the reduction, can be used as a matting agent. Silicon dioxide in daily life also has a very wide range of applications, such as the addition of silica food and packaging bags for fruits and vegetables can play a role in improving the preservation of freshness technology. Silicon dioxide can also play a role in the prevention and control of research fruits through a variety of different diseases of efficient fungicide; in the production of alcohol, can purify the treatment of beer and extend the freshness period.
| Product name | Precipitated silicon dioxide |
| Physical Form | Powder |
| D50(um) | 5~15 |
| BET(m2/g) | 260~280 |
| DBP(cm/g) | 2.0~3.0 |
| Silica (dry basis)% | ≥99 |
| Drying Loss% | 2.0~3.0 |
| Ignition loss (dry basis)% | ≤7.0 |
| pH(10% aqueous solution) | 7.0~8.5 |
| Sieve Residue 45µm(%) | ≤0.5 |
| Cu(mg/kg) | ≤30 |
| Mn(mg/kg) | ≤50 |
| Fe(mg/kg) | ≤300 |
| Soluble salts (As Na2SO4)% | ≤1.0 |
Najin Import and Export (Shandong) Co., Ltd. is a comprehensive, diversified, and comprehensive company with BDO, PEG, PPG, PTMEG, MDI, TDI, PVA, NMP, and polyether polyols, polyester polyols, and polymer polyols as its main industrial chains. We have a professional sales team that has won recognition and praise from the industry with exquisite technology, sound administrative management, and good teamwork. The product is sold to multiple domestic and foreign enterprises.
We always adhere to the principle of "quality first, customer first, and reputation first", and are committed to providing customers with the best products. We will also continue to build a professional chemical product supply chain with the highest quality service, best products, and maximum efforts.
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