Description

Disodium 6-[[2,6-Dihydroxy-3-[(2-Hydroxy-3-Nitro-5-Sulphonatophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(4-Nitrophenyl)Azo]Naphthalene-2-Sulphonate is a high-purity, synthetic azo dye intermediate of significant industrial importance. Its complex, multi-azo structure provides excellent chromophoric properties, making it a critical precursor for producing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop products with specific, vibrant color characteristics and enhanced fastness properties.

Application

• Primary Intermediate for Dye Synthesis: A key building block in the manufacture of complex azo dyes, particularly for textile fibers like cotton, wool, and nylon.
• Pigment Production: Used in the synthesis of high-performance organic pigments for inks, plastics, and coatings, where color strength and stability are paramount.
• Textile Dyeing: As a precursor to dyes that impart deep, wash-fast colors to fabrics.
• Specialty Ink Formulations: Employed in creating colorants for printing inks, including those used in packaging and security printing applications.
• Research & Development: Serves as a standard or reagent in chemical research focused on dye chemistry, photochemistry, and material science.
• Analytical Chemistry: Potential use as a colorimetric reagent or indicator in specific analytical methods due to its distinct chromogenic properties.

Basic Information

Item	Detail
Product Name	Disodium 6-[[2,6-Dihydroxy-3-[(2-Hydroxy-3-Nitro-5-Sulphonatophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(4-Nitrophenyl)Azo]Naphthalene-2-Sulphonate
CAS No.	93940-00-2
Molecular Formula	C34H20N6Na2O14S2
Molecular Weight	846.72 g/mol
Synonyms	6-[[2,6-Dihydroxy-3-[(2-Hydroxy-3-nitro-5-sulfophenyl)azo]phenyl]azo]-4-hydroxy-3-[(4-nitrophenyl)azo]-2-naphthalenesulfonic acid, disodium salt; C.I. 27290; Azo dye intermediate 27290; Disodium 4-hydroxy-3-[(4-nitrophenyl)azo]-6-[[3-[(2-hydroxy-3-nitro-5-sulfophenyl)azo]-2,6-dihydroxyphenyl]azo]-2-naphthalenesulfonate; Acid Black 52 intermediate; Multi-azo dye precursor
EINECS	Contact for details

Quality Control

Our Disodium 6-[[2,6-Dihydroxy-3-[(2-Hydroxy-3-Nitro-5-Sulphonatophenyl)Azo]Phenyl]Azo]-4-Hydroxy-3-[(4-Nitrophenyl)Azo]Naphthalene-2-Sulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance. Key parameters such as assay (HPLC), heavy metal content, and moisture are strictly controlled. A comprehensive Certificate of Analysis (COA) documenting all test results is provided with each shipment to guarantee compliance with your specifications and industry standards.

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 and incompatible materials. The compound is light-sensitive; prolonged exposure to light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
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.