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The document describes a procedure for extracting caffeine from black tea bags. An infusion was made with 5 tea bags in heated water, which was separated into tubes and sodium carbonate was added to ionize the solution and facilitate the transfer of caffeine to the organic phase. Methylene chloride was then added, dissolving the caffeine in this organic phase. Finally, a mass of 0.0256 g of raw caffeine was obtained after the.

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