Features of Silicon dioxide
1 physical property
crystalline silica
Density: 2.2 g/cm3
Melting point: 1723°C
Boiling point: 2230°C
Refractive index: 1.6
Changes when heated: Melt with strong alkali when heated to form silicate
Solubility: insoluble in water, can react with HF to generate gaseous SiF4
2 chemical properties
The chemical properties are relatively stable. Does not react with water. It has high fire resistance, high-temperature resistance, small thermal expansion coefficient, high insulation, corrosion resistance, piezoelectric effect, resonance effect and unique optical characteristics. [11] It is an acidic oxide and does not react with common acids. Hydrofluoric acid reacts with silicon dioxide to form gaseous silicon tetrafluoride. Reacts with hot concentrated, robust alkali solution or molten alkali to form silicates and water. React with various metal oxides at high temperatures to form silicates. The nature of silicon dioxide is inactive; it does not react with halogens other than fluorine and hydrogen fluoride, hydrogen halide, sulfuric acid, nitric acid, or perchloric acid (except hot concentrated phosphoric acid).
Application of Silicon dioxide
Silica is a raw material for manufacturing glass, quartz glass, water glass, optical fibre, essential components of the electronic industry, optical instruments, handicrafts and refractory materials. It is an essential material for scientific research.
When the silicon dioxide is crystallized, it becomes a crystal; after silica gelation and dehydration, it becomes agate; when the hydrous colloid of silicon dioxide solidifies, it becomes opal; when the silicon dioxide crystal grains are smaller than a few microns, it forms chalcedony, flint, and secondary quartz rock. It is a mineral resource with very stable physical and chemical properties. The crystal belongs to the oxide mineral of the trigonal crystal system, low-temperature quartz (α-quartz), the most widely distributed mineral species in the quartz group minerals. The generalized quartz also includes high-temperature quartz (β-quartz). Quartz block, also known as silica, is mainly the raw material for the production of quartz sand (also known as silica sand), as well as the raw material for quartz refractory materials silica can also be used as a lubricant and is an excellent flow promoter, mainly used as a lubricant, anti-sticking agent, and flow aid. It is especially suitable for the granulation of oils and extracts, and the granules produced have good fluidity and compressibility. It can also be used as a glidant in direct compression. As a disintegrant, it can significantly improve the fluidity of granules, increase the bulk density, increase the hardness of the prepared tablet, shorten the disintegration time limit, and increase the drug dissolution rate.
Price of Silicon dioxide
Particle size and purity will affect the product's price, and the purchase volume can also affect the cost of particle size. A large amount of large amount will be lower. The price of particle size can be found on our company's official website.
Silicon dioxide supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Zinc sulfide, nitride powder, Zinc sulfide powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Silicon dioxide , you are welcome to contact us or inquire at any time.
