Tannic Acid
Tannic acid (CAS 1401-55-4) is a plant-derived polyphenol mixture, predominantly a gallotannin. While C₇₆H₅₂O₄₆ (MW 1701.21) is commonly cited for the principal component, commercial material is a mixture whose composition varies by botanical source and grade; specifications rely on tannin content, clarity and colour.
• Leather tanning and textile mordant: crosslinks proteins and fixes dyes.
• Beverage clarification: precipitates proteins in wine, beer and juice.
• Metal treatment and inks: forms protective iron-tannate layers.
• Laboratory and pharmaceutical: protein precipitation and histology staining.
Product Name: Tannic Acid
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