Tannic Acid

£7.25 to £1312.95

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Variation ID		Product Code	Pack Size	List Price
9711	photo_camera	GPC1005-2W	50g GPC1005-2W	£7.25
7728	photo_camera	GPC1005-X	100g GPC1005-X	£11.45
7729	photo_camera	GPC1005-2X	250g GPC1005-2X	£21.95
7730	photo_camera	GPC1005-5X	500g GPC1005-5X	£35.45
7731	photo_camera	GPC1005-Y	1Kg GPC1005-Y	£62.95
9712	photo_camera	GPC1005-2.5Y	2.5Kg GPC1005-2.5Y	£138.75
7732	photo_camera	GPC1005-5Y	5Kg GPC1005-5Y	£274.95
7733	photo_camera	GPC1005-25Y	25Kg GPC1005-25Y	£1312.95

Tannic acid is a specific commercial form of tannin, a type of polyphenol. Its weak acidity (pKa around 10) is due to the numerous phenol groups in the structure. The chemical formula for commercial tannic acid is often given as C76H52O46, which corresponds with decagalloyl glucose, but in fact it is a mixture of polygalloyl glucoses or polygalloyl quinic acid esters with the number of galloyl moieties per molecule ranging from 2 up to 12 depending on the plant source used to extract the tannic acid. Commercial tannic acid is usually extracted from any of the following plant part: Tara pods (Caesalpinia spinosa), gallnuts from Rhus semialata or Quercus infectoria or Sicilian Sumac leaves (Rhus coriaria).

Molecular Formula: C₇₆H₅₂O₄₆Molecular Weight: 1701.20
Solubility in water (% weight): Soluble in water
Flash Point: 199 C
Melting Point: 218 C
Heavy metals (as Pb): <0.00003%
Arsenic (As): <0.0003%
Loss on drying at 105C: 3.28%
Sulphated Ash: 0.079%
Alcohol: Extracted