Description

Trigallic Acid is a naturally occurring polyphenolic compound, also known as 3,4,5-Trihydroxybenzoic acid, with the CAS registry number 2131-66-0. It serves as a versatile intermediate and functional ingredient valued for its antioxidant and metal-chelating properties. This compound is essential for manufacturers in the pharmaceutical, cosmetic, and specialty chemical industries seeking high-purity raw materials for synthesis and formulation.

Application

• Pharmaceutical Intermediate: Used in the synthesis of more complex polyphenolic compounds, antioxidants, and active pharmaceutical ingredients (APIs).
• Antioxidant Agent: Functions as a stabilizer in cosmetic and personal care formulations to prevent oxidation and extend product shelf life.
• Chemical Synthesis: Acts as a key building block for producing dyes, polymers, and other fine chemicals that require a gallic acid derivative.
• Research & Development: Employed in biochemical and analytical research as a standard or reagent for studying antioxidant activity and polyphenol chemistry.
• Food & Beverage Additive: Potential use as a natural preservative and antioxidant in food-grade applications, subject to regulatory compliance.

Basic Information

Product Name	Trigallic Acid
CAS No.	2131-66-0
Molecular Formula	C21H14O13
Molecular Weight	474.33 g/mol
Synonyms	3,4,5-Trihydroxybenzoic Acid; Gallic Acid (3,4,5-Trihydroxybenzoic Acid); 3,4,5-Trihydroxybenzoic Acid Trigallate; Trigalloyl Gallic Acid; 1,2,3-Tris[(3,4-dihydroxy-5-carboxyphenoxy)carbonyloxy]benzene; Benzene-1,2,3-triyl tris(3,4-dihydroxy-5-carboxybenzoate); Tannic Acid Component
EINECS	218-361-1

Quality Control

Our Trigallic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its properties of being easily oxidized, it is recommended to store the product under an inert atmosphere for long-term stability. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.