Description

3-[[4-[(2-Hydroxy-5-Methylphenyl)Azo]Phenyl]Azo]Benzenesulfonic Acid Sodium Salt is a high-purity azo dye intermediate and functional chemical compound. It is valued for its precise chemical structure, which provides consistent performance in demanding synthesis and coloration processes. This product is essential for manufacturers in the dye and pigment, specialty chemical, and research sectors requiring a reliable source of this specific diazo component.

Application

• Primary intermediate for the synthesis of azo dyes and pigments, particularly for textiles, inks, and coatings.
• Key precursor in the production of specialty colorants for plastics and synthetic fibers.
• Used in research and development for creating novel functional dyes with specific light-absorption properties.
• Potential component in the formulation of indicator dyes for analytical chemistry applications.
• Employed in the manufacture of high-performance pigments requiring excellent thermal and chemical stability.

Basic Information

Product Name	3-[[4-[(2-Hydroxy-5-Methylphenyl)Azo]Phenyl]Azo]Benzenesulfonic Acid Sodium Salt
CAS No.	37820-01-2
Molecular Formula	C19H15N4NaO4S
Molecular Weight	418.40 g/mol
Synonyms	Benzenesulfonic acid, 3-[[4-[(2-hydroxy-5-methylphenyl)azo]phenyl]azo]-, sodium salt; Sodium 3-[[4-[(2-hydroxy-5-methylphenyl)azo]phenyl]azo]benzenesulfonate; C.I. Acid Orange 67; Acid Orange 67; 3-[(4-[(2-Hydroxy-5-methylphenyl)azo]phenyl)azo]benzenesulfonic acid sodium salt; Azo dye intermediate OA-67
EINECS	Contact for details

Quality Control

Our 3-[[4-[(2-Hydroxy-5-Methylphenyl)Azo]Phenyl]Azo]Benzenesulfonic Acid Sodium Salt is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and composition. Certificates of Analysis (COA) detailing all relevant parameters 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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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