silica powder Raw Materials CAS 14808-60-7

MF:O2Si

MW:60.08

EINECS:215-684-8

Specification:silica powder

Sample:silica powder

Brand:silica powder

Appearance: white powder

Storage: Cool Dry Place

Brand: Globalchemical

Shelf Life: 2 Years

Test Method: HPLC

Uses and synthesis of silica powder

Silica powder is the most abundant of all minerals. Naturally occurring silica, called silica, makes up about 12 per cent of the earth's crust by weight. silica CAS 14808-60-7 has a melting point of 1,610°C. Silica Raw Materials are resistant to halogens, hydrogen fluoride and hydrofluoric acid. Except for fluorine, hydrogen fluoride and hydrofluoric acid, silica Raw Materials do not react with halogens, hydrogen halides or inorganic acids. However, it is soluble in hot concentrated lye and molten strong alkali or sodium carbonate.

Applications / Functions of silica powder

1. silica powder is used as catalyst carrier for phthalic anhydride, aniline, maleic anhydride, melamine, maleic rubber, acrylonitrile and other important petrochemical products. It is also widely used in refining petrochemical products, removing aromatic hydrocarbons, and selective adsorption and separation of certain organic gases and liquids. silica CAS 14808-60-7 It can also be used as an ion exchanger for removing polyvalent harmful elements in water. It is also used for the drying and storage of materials and instruments and the dewatering and refining of high purity gases.
2. For filtration
3. silica Raw Materials is mainly used as liquid adsorbent, desiccant and perfume carrier, and can also be used as catalyst carrier.

To be used as dehumidifying desiccant, dehydrating agent, moisture-proof agent and air humidity regulator. silica CAS 14808-60-7 Also used for drying of gases. It is also used as a cutter for catalysts and catalysts, as a reinforcing agent for silicone rubber, and as a sizing agent in the textile industry.

As a hygroscopic agent, its colour changes from blue to red as the amount of moisture absorbed increases to indicate changes in the humidity of the medium in the sealed packaging space.

Physicochemical Property of silica powder

It is transparent or semi-transparent tiny particles with porous structure, high specific surface area, high mechanical strength and high silica powder content. It is non-toxic and odourless. Good thermal stability, good acid resistance (except hydrofluoric acid). Soluble in concentrated caustic soda. silica Raw Materials Strong adsorption of water vapour and other gases and solvents.

Production methodprocess of silica powder

Sulfuric acid method diluted water glass mixed with dilute sulfuric acid at 20 ~ 30 ℃ for the reaction to produce silica gel, aging 4h, with 2% ~ 2.5% of dilute sulfuric acid immersion lh, washed with 40 ~ 50 ℃ of water, in the rotary dryer dehydration to the moisture content of ≤ 80%, after drying to the moisture content of ≤ 10%, placed in 500 ~ 550 ℃ activation furnace activation, after screening to produce a coarse pore microsphere silica Raw Materials