Description

3-[[2,5-Dimethyl-4-[(1-Hydroxy-6-Phenylamino-3-Sodiosulfo-2-Naphthalenyl)Azo]Phenyl]Azo]Naphthalene-1,5-Disulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart vibrant and stable coloration, particularly in the red to violet spectrum, due to its complex chromophoric structure. It is primarily sought after by manufacturers in the textile, ink, and specialty polymer industries for synthesizing high-performance dyes and pigments.

Application

• Textile Dyeing: A key intermediate for producing acid dyes and reactive dyes used on nylon, wool, and silk fibers.
• Ink Manufacturing: Used in the synthesis of pigments for high-quality printing inks, including inks for packaging and security applications.
• Plastic and Polymer Coloring: Serves as a precursor for colorants used in engineering plastics and synthetic fibers.
• Paper Coloring: Employed in the production of dyes for specialty and decorative papers.
• Leather Finishing: Used in the formulation of dyes for leather goods to achieve deep, uniform shades.
• Research & Development: A valuable chemical for R&D in novel chromophores and functional materials.

Basic Information

Product Name	3-[[2,5-Dimethyl-4-[(1-Hydroxy-6-Phenylamino-3-Sodiosulfo-2-Naphthalenyl)Azo]Phenyl]Azo]Naphthalene-1,5-Disulfonic Acid Disodium Salt
CAS No.	6227-11-8
Molecular Formula	C34H26N6Na2O10S3
Molecular Weight	844.82 g/mol
Synonyms	Acid Red 337; C.I. 17210; 3-[[2,5-Dimethyl-4-[(1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl)azo]phenyl]azo]-1,5-naphthalenedisulfonic acid disodium salt; 1,5-Naphthalenedisulfonic acid, 3-[[2,5-dimethyl-4-[(1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthyl)azo]phenyl]azo]-, disodium salt; Disodium 3-[[4-[(6-anilino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-2,5-dimethylphenyl]azo]naphthalene-1,5-disulphonate
EINECS	Contact for details

Quality Control

Our production of 3-[[2,5-Dimethyl-4-[(1-Hydroxy-6-Phenylamino-3-Sodiosulfo-2-Naphthalenyl)Azo]Phenyl]Azo]Naphthalene-1,5-Disulfonic Acid Disodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure high purity, consistent chromatic strength, and compliance with customer specifications. Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are provided to guarantee traceability and batch-to-batch reliability for your manufacturing processes.

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); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content	Max. 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Total impurities: Max. 3.0%

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