Description

Trisodium 3-[(2,4-dimethylphenyl)azo]-4-hydroxy-7-[[[[5-hydroxy-7-sulphonato-6-[(6-sulphonato-2-naphthyl)azo]-2-naphthyl]amino]carbonyl]amino]naphthalene-2-sulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart vibrant and stable coloration, making it a critical precursor in the synthesis of high-performance dyes and pigments. It is primarily sought after by manufacturers in the textile, ink, and specialty coatings industries who require consistent quality and reliable supply for their production processes.

Application

• Textile Dyeing: A key intermediate for producing reactive and direct dyes used on cotton, wool, and nylon fibers.
• Ink Manufacturing: Used in the formulation of inks for digital, packaging, and security printing applications.
• Industrial Pigments: Serves as a precursor for creating organic pigments used in plastics, paints, and coatings.
• Leather Coloring: Employed in the synthesis of dyes for the uniform and durable coloring of leather goods.
• Paper Staining: Used in the production of dyes for high-quality paper and specialty paper products.
• Research & Development: A valuable chemical for R&D laboratories focusing on novel chromophores and dye chemistry.

Basic Information

Item	Detail
Product Name	Trisodium 3-[(2,4-dimethylphenyl)azo]-4-hydroxy-7-[[[[5-hydroxy-7-sulphonato-6-[(6-sulphonato-2-naphthyl)azo]-2-naphthyl]amino]carbonyl]amino]naphthalene-2-sulphonate
CAS No.	67923-64-2
Molecular Formula	C41H26N6Na3O15S4
Molecular Weight	Contact for details
Synonyms	Acid Red 337; C.I. 17200; Trisodium 6-[(6-sulphonato-2-naphthyl)azo]-5-hydroxy-7-[[3-[(2,4-dimethylphenyl)azo]-4-hydroxy-2-sulphonatonaphthalen-7-yl]carbamoylamino]naphthalene-2-sulphonate; Reactive Red Dye Intermediate; Azo Dye Intermediate 67923-64-2; 3-[(2,4-Dimethylphenyl)azo]-4-hydroxy-7-[[[[5-hydroxy-7-sulphonato-6-[(6-sulphonato-2-naphthyl)azo]-2-naphthyl]amino]carbonyl]amino]naphthalene-2-sulphonic acid trisodium salt
EINECS	Contact for details

Quality Control

Our trisodium azo dye intermediate is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye synthesis. Certificates of Analysis (COA) documenting all test results are available upon request to support your quality assurance and regulatory compliance needs.

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 material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed when not in use to prevent absorption of moisture and degradation.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to standard
Purity (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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