Chemical properties Dark red rhombic crystal or purplish red flake. Soluble in water, alcohol, sulfuric acid and ether, insoluble in acetone. Uses Chromium trioxide is the main raw material for electroplating, making high purity chromium metal, dyestuff, synthetic rubber and oil refining. In the production of chromium plating, the content of chromium anhydride changes greatly, between 50 and 500g/L, mainly controlling the appropriate temperature and current density, which can obtain a bright coating on the smooth plating, and its solution can also be used for zinc plating passivation film to improve its protective performance. Chromium trioxide is mainly used in electroplating industry, as raw material for electroplating chromium such as bicycle, sewing machine, hand Chemicalbook table, instrument, flashlight, daily hardware, etc., and also used for making high-purity metal chromium. It is the raw material for the manufacture of chromium oxide green and zinc chromium yellow; It is also the raw material for the production of low temperature conversion catalyst, high temperature conversion catalyst and high pressure methanol synthesis catalyst. Wool is used as a mordant in dyeing and as an oxidant in printing and dyeing industry. In addition, it is also used for wood preservation. Uses Used as analytical reagent and strong oxidizing agent, also used in the manufacture of chromate oxidizing agent, spectral analysis reagent, determination of carbon and phosphorus, hardening oil and ethylene purification, nitrogen fertilizer production gas analysis, metal full phase analysis, plant protection testing. The manufacture of chromium salts, etc.
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