Colorless glass bottles of beer, to create glass bottles without color, the choice of raw materials must not contain iron. However, natural sand, limestone and soda ash will always have some iron compounds. How to eliminate the green in the glass? The chemical approach is to add a certain proportion of manganese dioxide to the glass melt. Manganese dioxide is an oxidant that oxidizes green divalent iron ions to yellow trivalent iron ions and manganese to purple trivalent manganese. Yellow and purple synthetic white, the glass becomes colorless and transparent. Glass contains different metal compounds that are "stained" in various colors. Add cuprous oxide, red glass can be obtained; add oxide drill - blue glass; add chromium oxide - green glass
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