Why chromium oxide can be used to prepare ink for printing paper money and securities?
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Author : Ada
Update time : 2023-02-13 13:27:40
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 Chromium oxide green pigment is widely used in fire-resistant materials, such as ceramic pigments, glazes, ceramics, enamel products, etc. It is also often used in buildings, ships, anti-counterfeiting, special coatings, floor paint, art coatings, inks, etc. It can also be made into a color paste. Chromium oxide green is used in a large amount in fire-resistant materials. Unshaped refractory materials such as castables, ramming materials, mortar, etc., shaped refractory materials such as high-chromium bricks, magnesia-chrome bricks, breathable ladle bricks, seat bricks, etc., fireclay, Green mud, and other products are also used for polishing and grinding. Many customers will also use them, such as polishing paste, abrasive, brake pads, gemstones, etc.
Preparation of chromium oxide Oxidation-reduction method: It is prepared by mixing potassium dichromate and sulfur, reducing reaction, wet grinding, hot water washing, pressure filtration, drying, and crushing Chromium trioxide decomposition method: It can be prepared by thermal decomposition, cooling, and high-speed grinding of chromic anhydride at 1100 ℃. Due to the high temperature required, a single-phase electric furnace is generally used for heating. Chromium hydroxide decomposition method: chromium hydroxide is thermally decomposed at high temperatures, washed, dried, and crushed.
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.
