Why can chromium oxide be used for camouflage paint?
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Author : Ada
Update time : 2023-02-13 13:29:52
What is chromium oxide? Chrome oxidegreen is also known as "chrome oxide," commonly known as "chrome green." Dark green hexagonal crystal or amorphous powder. Its melting point is 2435 ℃, its boiling point is 4000 ℃, its relative density is 5.21, and its refractive index is 2.551. Its hydrate is known as "water chrome green," a purple amorphous crystal or blue-grey green gel. It is insoluble in water, acid, and alkali and can be soluble in hot potassium bromate. Its property is extremely stable; even if hydrogen is introduced at high temperatures, it will not change. Preparation method: sodium dichromate reacts with sulfur, Or it is obtained by heating and decomposing chromium hydroxide and ammonium dichromate. Use: as a pigment, organic synthesis catalyst, ceramic glaze, paint raw material, and raw material for making chromium alloy and chromium salt.
Use of chromium oxide It is also used in metallurgy, ceramics, refractories, pigments, and organic synthesis catalysts. It can be used as an analytical reagent, catalyst, filler for coloration, abrasion resistance and corrosion resistance of adhesives and sealants, colorant for enamel, ceramics, artificial leather, and building materials, the catalyst for organic chemical synthesis, light-resistant coating and special ink for printing paper money As a colorant in cosmetics; it is mainly used in eye cosmetics, but not in oral and lip cosmetics. It is not recommended to be used in facial cosmetics and nail polish. Chromium trioxide is one of the main components of silver plating varnish. The newly prepared chromium trioxide is an important raw material for preparing chromium fluoride and chromium bromide.
Preparation of chromium oxide One is to prepare chromium oxide by thermal decomposition reaction of dichromate and ammonium sulfate. This process has less pollution but is relatively high cost. Although carbon can also replace ammonium sulfate in a traditional industry, the reduction process should be protected by strict control of the carbon dioxide atmosphere to prevent the reoxidation of chromium oxide, which is difficult to operate. The other is to produce chromic anhydride by the dichromate sulfuric acid melting method; Chromium oxide is prepared by chromic anhydride decomposition. This method has high product quality, but the process flow is long and expensive. At the same time, the utilization rate of sulfuric acid is less than 50%. Each ton of chromic anhydride produces 1.4t sodium bisulfate containing chromium, and the sulfur content of the product is high due to the indirect use of sulfur or sulfur compounds.
Price of chromium oxide Chromium oxide particle size and purity will affect the product's price, and the purchase volume can also affect the cost of chromium oxide. A large amount of large amount will be lower. The price of chromium oxide can be found on our company's official website.
Chromium oxide 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 chromium oxide, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective chromium oxide, you are welcome to contact us or inquireat any time.
