Description

Disodium 5-[[2,4-Dihydroxy-3-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]-2-(Phenylamino)Benzenesulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing a range of vibrant and stable dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-quality colorants.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile dyeing and printing.
• Key raw material in the production of inks for various printing applications, including packaging and publications.
• Used in the formulation of specialty coatings and paints requiring specific color properties and lightfastness.
• Potential use as a colorant or intermediate in the research and development of functional dyes for non-textile applications.
• Employed in analytical chemistry and laboratory research as a chromogenic reagent or standard.

Basic Information

Product Name	Disodium 5-[[2,4-Dihydroxy-3-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]-2-(Phenylamino)Benzenesulphonate
CAS No.	6416-67-7
Molecular Formula	C24H17N5Na2O9S2
Molecular Weight	637.53 g/mol
Synonyms	Acid Black 132; C.I. 17205; Disodium 5-[[2,4-dihydroxy-3-[(4-sulfophenyl)azo]phenyl]azo]-2-(phenylamino)benzenesulfonate; 2-Naphthalenesulfonic acid, 5-[[2,4-dihydroxy-3-[(4-sulfophenyl)azo]phenyl]azo]-2-(phenylamino)-, disodium salt; Benzenesulfonic acid, 5-[[2,4-dihydroxy-3-[(4-sulfophenyl)azo]phenyl]azo]-2-(phenylamino)-, disodium salt; Azo dye intermediate 6416-67-7
EINECS	Contact for details

Quality Control

Our Disodium 5-[[2,4-Dihydroxy-3-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]-2-(Phenylamino)Benzenesulphonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, color strength, and performance as a dye intermediate. A detailed Certificate of Analysis (COA) confirming identity, assay, and impurity profiles 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). Keep away from incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct 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
Water Solubility	Freely soluble

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