Description

Disodium 5-[(5-Acetamido-2-Sulphonatophenyl)Azo]-6-[(2,6-Dimethylphenyl)Amino]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its complex molecular structure is engineered to provide excellent chromophore properties, making it a critical precursor for the production of specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop products with specific color fastness and hue characteristics.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, water-soluble azo dyes for textiles and fibers.
• Specialty Ink Manufacturing: Used in the formulation of inks for jet printing, packaging, and security applications requiring precise color properties.
• Pigment Synthesis: Acts as a precursor in the development of organic pigments for plastics, paints, and coatings.
• Research & Development: Employed in chemical research for studying azo coupling reactions and developing novel chromogenic materials.
• Analytical Reagents: Potential use as a colorimetric indicator or reagent in specific analytical chemistry applications.

Basic Information

Product Name	Disodium 5-[(5-Acetamido-2-Sulphonatophenyl)Azo]-6-[(2,6-Dimethylphenyl)Amino]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	79135-95-8
Molecular Formula	C26H23N4Na2O9S2
Molecular Weight	636.57 g/mol
Synonyms	5-[(5-Acetamido-2-sulfophenyl)azo]-6-[(2,6-dimethylphenyl)amino]-4-hydroxy-2-naphthalenesulfonic acid disodium salt; C.I. Acid Orange 156; Disodium 6-[(2,6-dimethylphenyl)amino]-4-hydroxy-5-[(2-(acetylamino)-5-sulfophenyl)azo]-2-naphthalenesulfonate; Azo dye intermediate 79135-95-8; Acid Orange 156 disodium salt
EINECS	Contact for details

Quality Control

Our production of Disodium 5-[(5-Acetamido-2-Sulphonatophenyl)Azo]-6-[(2,6-Dimethylphenyl)Amino]-4-Hydroxynaphthalene-2-Sulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines
pH (1% Solution)	6.0 - 8.0
Water Solubility	Freely soluble

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