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10th August 2010, 07:37 PM
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#33 |
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(deceased)
Join Date: Dec 2004
Location: Portugal
Posts: 9,694
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Search for "Tannic acid".
Contained in red whine, coffe, tea, spinach, etc The formula is C76H52O46. The other day, a museum restorer also adviced this stuff. It is found, over here, in traditional drug stores. Certainly acquirable in the Internet. http://en.wikipedia.org/wiki/Tannic_acid |
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