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By which process is tanning obtained from plant sources?

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A solution of tannic acid is obtained from one of these natural sources by extraction with hot water; in particular, gallotannic acid is obtained from plant gall. Tannin varies somewhat in composition, having the approximate empirical formula C 76 H 52 O 46 .

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Similar questions: What is the basic chemical formula for tannin? How is gallotanic acid obtained? [ Hide these questions ]

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