1401-55-4 | Tannic Acid

Chemical type

• Natural polyphenol
• Hydrophilic precursor for nanospheres

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• Polyphenolic compound (plant-derived, e.g., from tea and fruits)

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Key properties

• Contains multiple hydroxyl groups for hydrogen bonding
• UV absorption at 220 nm (π-π) and 278 nm (n-π)
• Reacts with APTES via Michael addition and Schiff base formation
• Forms quinone and imine bonds (absorption at 325 nm)

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• Strong antibacterial activity (penetrates bacterial cell walls, disrupts metabolism, inhibits nutrient uptake like sugars/amino acids)
• Antioxidant, anti-inflammatory, antimutagenic
• Effective against gram-positive bacteria such as Staphylococcus aureus
• Low toxicity as a natural compound

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• Reactant in synthesis of TAP NPs under weak alkaline conditions
• Contributes hydrophilic groups to membrane surface for hydration layer
• Enhances antifouling in oil-water emulsions

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• Loaded onto HA-zirconia scaffolds for inherent antibacterial properties
• Prevents biofilm formation and infections on dental implant surfaces
• Alternative to synthetic antibiotics in biomedical scaffolds

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Classification by use

• Chemicals used in nanomaterial synthesis
• Chemicals for surface modification and antifouling

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• Natural antibacterial agents
• Antioxidants and therapeutics in bone/dental tissue engineering

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A trustworthy factory and manufacturer

Demei Chemical Technology Co., Ltd. is a modern high-tech enterprise integrating R&D, production, and sales. The company's founder, Dr. Arron, born in April 1975, graduated from the School of Mechanical Engineering at Yanshan University and has been engaged in research in the fields of mechanical engineering and chemical synthesis for many years. The company's products focus on the chemical industry, primarily dealing in chemical raw materials and chemical production machinery and equipment. With its strong technical capabilities, advanced production equipment, and strict quality management system, the company has earned the trust of customers worldwide.

1. [Cite:1] Construction of dual-heterogeneous membrane surface via nanosphere-mediated surface segregation for oil-water separation, Advanced Membranes, Volume 7, June 2026, 100205
2. [Cite:2] Tannic Acid-Loaded Antibacterial Hydroxyapatite-Zirconia Composite for Dental Applications, Crystals, 2025, 15(5), 396