Description

3-[[4-[[5-Methyl-2-[[(4-Methylphenyl)Sulfonyl]Oxy]Phenyl]Azo]-1-Naphthalenyl]Azo]Benzenesulfonic Acid Sodium Salt is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for producing vibrant and stable organic pigments and dyes. This compound is primarily needed by manufacturers in the textile, ink, plastics, and specialty coatings industries seeking to develop high-performance colorants.

Application

• Primary Intermediate for Azo Pigments & Dyes: Serves as a critical building block in the synthesis of high-performance, water-soluble azo colorants.
• Textile Dyeing: Used in the production of dyes for coloring natural and synthetic fibers, offering good wash and light fastness.
• Ink Formulation: A key component in manufacturing pigments for printing inks, including those for packaging and publications.
• Plastics and Polymer Coloring: Employed to create color masterbatches and compounds for coloring various plastic materials.
• Specialty Coatings: Used in the development of industrial and automotive coatings requiring specific color properties.
• Research & Development: Utilized in chemical research for developing novel chromophores and studying azo coupling reactions.

Basic Information

Product Name	3-[[4-[[5-Methyl-2-[[(4-Methylphenyl)Sulfonyl]Oxy]Phenyl]Azo]-1-Naphthalenyl]Azo]Benzenesulfonic Acid Sodium Salt
CAS No.	72361-38-7
Molecular Formula	C30H23N4O6S2Na
Molecular Weight	630.64 g/mol
Synonyms	Sodium 3-((4-((5-methyl-2-((4-methylphenyl)sulfonyl)oxy)phenyl)azo)-1-naphthyl)azo)benzenesulfonate; Benzenesulfonic acid, 3-[[4-[[5-methyl-2-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-1-naphthalenyl]azo]-, sodium salt; Azo dye intermediate 72361-38-7; Acid Red dye precursor; Water-soluble azo compound sodium salt; Sodium salt of a disazo dye acid; 3-((4-((2-((p-Tolylsulfonyl)oxy)-5-methylphenyl)azo)-1-naphthyl)azo)benzenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Every lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, IR for identification, and loss on drying. A detailed Certificate of Analysis (COA) confirming compliance with agreed specifications is provided with each shipment.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Content (Karl Fischer)	≤ 3.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in water)	Freely soluble

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