![]() ![]() SRP: The scientific literature for the use of contact lenses in industry is conflicting. Wash away material which may have contacted the body with copious amounts of water or soap and water. Build dikes to contain flow as necessary. ![]() The liquid basic chromium sulfate product is obtained, and then concentrated and dried to obtain a solid basic chromium sulfate product. Add water to adjust the concentration of the solution to 40~42☋é, first cool it naturally, and then freeze it in a cooling crystallizer to below 10☌, so that part of the sodium sulfate will form Glauber's salt crystals. The reaction product is a syrupy viscous liquid. Organics reduction method The mother liquor of sodium dichromate is acidified with sodium bisulfate solution (40~42☋é) or sulfuric acid in a lead-lined or glass-lined reactor with stirring, then slowly add sucrose reducing agent under stirring to make The reduction of hexavalent chromium keeps the solution boiling at the end of the reaction, which is conducive to the completion of the reaction. 3.1 Methods of Manufacturing The production methods of basic chromium sulfate mainly include organic reduction method and sulfur dioxide reduction method. ![]()
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