- An electrostatic potential map (blue is positive and red is negative charge) of decagalloyl tannic acid, i.e. a tannic acid derived from ten molecules of gallic acid.
- Tannic acid is a specific form of tannin, a type of polyphenol. Tannic acids weak acidity (pKa arou: nd 6) is due to the numerous phenol groups in the structure.
- Tannic acid (TAN-ik AS-id) is a pale yellow amorphous powder, shiny scales, or spongy material that gradually darkens when exposed to air.
- The dry tastes of many kinds of fruit are due to the tannic acid. For example, there is a large amount of tannic acid in the cells of persimmons.
- Tannic Acid - an overview | ScienceDirect …
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- It is a type of tannin, a class of astringent polyphenolic compounds. Tannic acid is extracted from gallnuts, oak bark, sumac berries, and other plant sources.
- 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 common name "Tannic acid" has been adopted to distinguish the commercial substance from other tannins, such as condensed tannins.
- As the phenols are considered weak acids thus, tannic acid is a weak acid. Acidum tannicum or Gallotanic acid are two other names of tannic acid.
