847-304-4400 
Tannic Acid
2,3-dihydroxy-5-({[(2R,3R,4S,5R,6R)-3,4,5,6-tetrakis({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)oxan-2-yl]methoxy}carbonyl)phenyl 3,4,5-trihydroxybenzoate
CAS: 1401-55-4
A commercial form of tannin, a type of polyphenol.
FEMA#: 3042
Other Known Names: acidum tannicum, gallotannic acid, digallic acid, gallotannin, tannimum, quercitannin, oak bark tannin, quercotannic acid, querci-tannic acid, querco-tannic acid
Molecular Formula: C76H52O46
Applications: fabric dyeing, corrosion inhibitor, beer clarificaiton, aroma compound in soft drinks and juices, natural clarifying agent, color stabilizer and taste enhancer in wine making
Properties
Molar Mass: 1,701.20 g/mol
Melting Point: Decomposes >200°C