Tannic acid

Tannic acid (CAS 72401-53-7), also commercially known as tannin, is a plant-derived polyphenolic compound used across food, industrial, and pharmaceutical manufacturing. It functions primarily as an antioxidant, chelating agent, and protein-precipitating agent.

This versatile compound is relevant across a broad range of formulation and processing applications. In food and beverage production, it acts as a fining agent for wines, beers, and fruit juices, clarifying liquids by precipitating haze-forming proteins.

Pharmaceutical and nutraceutical formulators use it as an antioxidant stabilizer to protect active ingredients from oxidative degradation. This application is common in both solid and liquid dosage forms to ensure product longevity and efficacy.

In leather processing, it cross-links collagen fibers during vegetable tanning, producing firm, durable leather without synthetic tanning agents. This traditional method remains a staple in high-quality leather manufacturing and textile processing.

Water treatment operations apply it as a coagulant and metal chelator to bind heavy metal ions and assist in suspended solids removal. Its ability to sequester minerals makes it a valuable tool for industrial purification and environmental management.

The material is supplied as a light yellow to tan fine powder. Standard commercial grades include food-grade (FCC), pharmaceutical-grade (USP), and technical-grade, with purity levels typically ranging from 95% to 99%.

Bulk quantities are available in fiber drums or multi-layer bags suited for industrial procurement volumes. These packaging options ensure the stability and integrity of the product during long-term storage and international shipping.