Description

Catechu (Resin) is a natural extract derived from the heartwood of the *Acacia catechu* tree, primarily composed of catechins and catechutannic acid. This versatile botanical resin is valued for its astringent, tanning, and coloring properties, making it a key ingredient in various traditional and industrial formulations. It serves as a crucial raw material for manufacturers in the leather, textile, food, and pharmaceutical sectors seeking natural and effective solutions.

Application

• Leather Tanning: As a traditional vegetable tanning agent to produce durable, high-quality leather.
• Textile Dyeing: Used as a natural dye and mordant to impart brown shades and improve colorfastness on fabrics.
• Food & Beverage Industry: Employed as a natural colorant and flavoring agent, particularly in certain alcoholic beverages and food products.
• Pharmaceuticals & Nutraceuticals: Utilized in herbal formulations and dietary supplements for its astringent and potential therapeutic properties.
• Adhesives & Inks: Acts as a binding agent and pigment in the manufacture of specialty adhesives and inks.
• Wood Preservation: Applied in treatments to protect wood from decay and insects due to its tannin content.

Basic Information

Product Name	Catechu (Resin)
CAS No.	8001-76-1
Molecular Formula	Complex mixture; primarily C15H14O6 (Catechin) and related polyphenols
Molecular Weight	Mixture; Catechin: 290.27 g/mol
Synonyms	Cutch; Black Catechu; Catechu Extract; Acacia Catechu Extract; Terra Japonica; Pegu Catechu; Khair; Katha; Cachou; Catechu Powder
EINECS	232-291-4

Quality Control

Our Catechu (Resin) is produced and tested to ensure consistent quality and performance. We adhere to stringent quality management protocols, and the product can be supplied to meet various grade requirements, including technical and food-grade specifications where applicable. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and other critical parameters 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 room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to air, moisture, or direct light may affect its quality and stability.

Specification

Item	Specification
Appearance	Dark brown to black solid pieces or powder
Identification (IR)	Conforms to standard
Assay (Total Tannins)	Min. 25% - 60% (Grade dependent)
Loss on Drying	Max. 10-15%
Ash Content	Max. 5-8%
Solubility	Partially soluble in water and alcohol

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