Description

Indigo CAS NO 482-89-3 is a classic, deep blue vat dye renowned for its historical significance and vibrant, colorfast properties. This organic compound is a cornerstone in the textile industry, prized for its ability to produce the iconic indigo blue shade on denim and other cotton fabrics. It is an essential raw material for manufacturers in the textile dyeing, printing ink, and specialty chemical sectors. Its unique chemical structure also makes it a compound of interest in advanced material science and analytical chemistry.

Application

• Textile Dyeing: The primary application for dyeing cotton, wool, and other natural fibers, especially in the production of denim for jeans.
• Printing Inks: Used as a pigment in the formulation of high-quality blue inks for various printing applications.
• Historical & Artistic Pigments: Serves as a base for creating traditional blue pigments in art restoration and fine arts.
• Chemical Intermediate: Utilized in organic synthesis for the production of more complex dyes and functional chemicals.
• Analytical Reagent: Employed as a pH indicator and redox indicator in laboratory settings.
• Specialty Coatings: Incorporated into coatings where a specific, stable blue color is required.

Basic Information

Product Name	Indigo
CAS No.	482-89-3
Molecular Formula	C16H10N2O2
Molecular Weight	262.27 g/mol
Synonyms	Indigotin; 2-(1,3-Dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one; Vat Blue 1; CI 73000; Indigo Blue; Synthetic Indigo; 2,2'-Bis(2,3-dihydro-3-oxoindolyliden); Indigo Pure
EINECS	207-586-9

Quality Control

Our Indigo is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. We offer various grades, including technical and purified standards, with typical purity levels exceeding 95%. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, ash content, and solubility. Our quality systems are designed to meet the rigorous demands of industrial and laboratory applications.

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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark blue powder with a coppery luster
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Ash Content	≤ 0.5%
Moisture (Karl Fischer)	≤ 1.0%
Solubility (in DMSO)	Clear, blue solution

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