tannic acid(redirected from tannate)
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tannic acid[′tan·ik ′as·əd]
C14H10O9 A yellowish powder with an astringent taste; soluble in water and alcohol, insoluble in acetone and ether; derived from nutgalls; decomposes at 210°C; used as an alcohol denaturant and a chemical intermediate, and in tanning and textiles. Also known as digallic acid; gallotannic acid; gallotannin; tannin.
C76H52O46 Yellowish-white to light-brown amorphous powder or flakes; decomposes at 210-215°C; very soluble in alcohol and acetone; used as a mordant in dyeing, in photography, as a reagent, and in clarifying wine or beer. Also known as pentadigalloylglucose.