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[Chemical Knowledge]：What are the upstream raw materials for silica and what are the downstream products?

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Silica has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related products are numerous. The following are some common upstream and downstream related products:

1. Upstream products:

(1) Quartz sand: Quartz sand is one of the main raw materials of silica, and silica products of different purity and specifications can be obtained after processing.

(2) Soda ash: Soda ash is used as a precipitant in the production process of silica, reacts with silicate aqueous solution to generate silicic acid precipitate, and is further processed to obtain silica products.

2. Downstream products:

(1) Organosilicon compounds: Silica can react with organochlorosilanes and other compounds to generate organosilicon compounds, such as silicone oil, silicone rubber, silicone resin, etc. These organic silicon compounds have excellent performance in sealing, lubrication, insulation, high temperature resistance, etc., and are widely used in aerospace, automotive, electrical and electronic fields.

(2) Ceramic material: Silica can be used as one of the main components of ceramic materials, mixed with other inorganic raw materials and fired to obtain ceramic products. Ceramic materials have the advantages of high hardness, high wear resistance and high chemical stability, and are widely used in machinery, chemical and other fields.

(3) coatings: silica can be used as pigments and fillers in coatings to improve the weather resistance, scratch resistance, leveling and other properties of coatings. At the same time, silica can also be used to prepare waterproof coatings, fireproof coatings and other special functional coatings.

(4) Food additives: Silica can be used as food additives for the production of candy, biscuits, bread and other foods, anti-caking, moisture-proof, improve taste and so on.

In short, silica has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related products are numerous, which is of great significance for promoting the development of the chemical industry.

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