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By Lzh | 02 February 2023 | 0 Comments

Why chrome oxide is a high-quality refractory?

What is chromium oxide?
Chrome oxide is a kind of furnace product. Chrome oxide green is durable in terms of the use and conditions of all pigments, including the highest temperature. Compared with emerald green and phthalocyanine green, chrome oxide green has an inactive color effect, low coloring power, and is difficult to mix colors; Therefore, despite its pleasant color, chrome oxide green is rarely used by painters. Chrome oxide green was discovered by the French Vauquelin (1797) and became a kind of ceramic pigment in the early 19th century. It became a painting pigment for the first time around 1840 and was widely used in 1862. Chrome oxide green, also known as chromium trioxide and chromium oxide, has a molecular weight of 151.99. It is a hexagonal crystal system, a green powder, with a density of 5.21g/cm3 and a Mohs hardness of 8.5~9; it is close to corundum (Al2O3), second only to diamond, but more than quartz SiO2, topaz Al2 [SiO4] (F, OH) 2 and zircon ZrSiO4). Refractive index 2.5 (good coverage), specific heat capacity (20 )/0.17J/(g · K). It is insoluble in water, acid, and organic solvent, slightly soluble in concentrated sodium hydroxide solution, soluble in hot sodium bromate solution, hot concentrated perchloric acid solution, or boiling sulfur phosphorus mixed acid. It is extremely stable to light, atmosphere, and corrosive gases (H2S, SO2, etc.) and has excellent weather resistance. It is stable when heated, with a melting point of 2265 and a boiling point of 4000 . It is a high-quality refractory Chromium trioxide mainly used in metallurgy, pigments, grinding and polishing, refractories, and newly developed melt-blown coatings.
Properties of chromium oxide
Bright green to dark green, density: 5.21. Melting point: 2266 ° C. Boiling point: 4000 ° C. It has a metallic luster, magnetism, strong hiding power, high-temperature resistance, sun resistance, insoluble in water, insoluble in acid, and relatively stable in the atmosphere. It does not affect acid, alkali, or sulfur dioxide gas of general concentration. It has excellent outstanding pigment quality and fastness.
Properties of chromium oxide
It is used for smelting metal chromium and chromium carbide, enamel, ceramics, glass, artificial leather, refractory materials, the coloring of building materials, catalyst for organic synthesis, special printing ink for manufacturing light-resistant materials and printing banknotes, metal polishing and grinding materials, chromizing of metal surfaces, magnetic materials, etc. It is used for coatings, ceramics, rubber, art pigments, and camouflage coatings.
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 inquire at any time.

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