Description

Sodium 4-[[5-[(2,4-Dimethylphenyl)Azo]-2,4-Dihydroxyphenyl]Azo]Benzenesulphonate is a high-purity azo dye intermediate and specialty chemical. It is valued for its precise chemical structure, which provides excellent chromophoric properties and batch-to-batch consistency for demanding industrial applications. This compound is essential for manufacturers in the textile, ink, and specialty coatings sectors seeking reliable and high-performance colorant precursors.

Application

• Primary Intermediate for Azo Dyes: Key precursor in the synthesis of high-value, complex azo dyes for textiles and fibers.
• Specialty Ink Formulations: Used in the production of pigments for inks in packaging, printing, and security applications.
• Functional Colorants for Coatings: Imparts specific color and functional properties in industrial and automotive coatings.
• Research & Development: Serves as a critical building block in chemical R&D for novel chromophores and functional materials.
• Analytical Chemistry: May be employed as a reagent or standard in chromatographic and spectroscopic analysis.

Basic Information

Product Name	Sodium 4-[[5-[(2,4-Dimethylphenyl)Azo]-2,4-Dihydroxyphenyl]Azo]Benzenesulphonate
CAS No.	85631-83-0
Molecular Formula	C26H21N4NaO5S
Molecular Weight	524.52 g/mol
Synonyms	Benzenesulfonic acid, 4-[[5-[(2,4-dimethylphenyl)azo]-2,4-dihydroxyphenyl]azo]-, sodium salt; C.I. 12715; Acid Orange 116 (sodium salt); Sodium 5-[(2,4-dimethylphenyl)azo]-2,4-dihydroxy-3-(phenylazo)benzenesulfonate; 2,4-Dihydroxy-3-[(E)-phenyldiazenyl]-5-[(E)-(2,4-dimethylphenyl)diazenyl]benzenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our production of Sodium 4-[[5-[(2,4-Dimethylphenyl)Azo]-2,4-Dihydroxyphenyl]Azo]Benzenesulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for dye intermediate applications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee supply reliability and product consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents	Meets ICH guidelines

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