Tannic acid
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Tannic acid is a specific form of tannin, a type of polyphenol. Its weak acidity is due to the numerous phenol groups in the structure. The chemical formula for commercial tannic acid is often given a
A bottle of tannic acid (water solution) from the redwood tree.
Oak
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An oak is a hardwood tree or shrub in the genus Quercus of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn, borne within a cup. The genus is wid
Tannic acid
…tannic acid monograph, only tannins obtained from the above-mentioned plants can be considered as tannic acid. Sometimes extracts from chestnut or oak wood are also described as tannic acid but this is an incorrect use of the term. It is a yellow to light brown amorphous powder. While tannic acid is…
Quercus robur
Quercus robur habit
Illustration of Q. lusitanica showing staminate (left) and pistillate flowers (right)
Catkins of Q. alba containing the staminate or 'male' flowers