I had two glass bottles of Coca Cola® with my lunch today, one was made of glass with a green tint and the other of clear, both bottles had the same batch number but from the markings on them i deduced that the clear one was made from recycled glass. The embossing on it was also not as legible as on the green bottle. What is it that is added to new glass to give it this green tint, what is the purpose of it and why is it lost when the glass is melted and re-moulded?
2006-12-27 05:40:13 · 3 answers · asked by sporritt 2 in Science & Mathematics ➔ Chemistry
Often impurities in the sand or other chemicals used to make glass will impart a color. Most usually green glass comes from an impurity of iron. The cleaner colored glass may have simple been made from recycled clear glass that had impurities removed.
2006-12-27 05:47:53 · answer #1 · answered by docrider28 4 · 0⤊ 0⤋
Iron is mixed with the glass during production. Iron absorbs light in the 89 nanometer range, this lies in the visible spectrum which happens to be green.
2006-12-27 16:15:19 · answer #2 · answered by fish38474 2 · 0⤊ 0⤋
extremely tough point. research with bing and yahoo. that can help!
2014-11-23 01:48:36 · answer #3 · answered by Anonymous · 0⤊ 0⤋