Description

Disodium 7-[(4-Aminobenzoyl)Amino]-4-Hydroxy-3-[[3-Methyl-4-[(3-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate known for its excellent chromophore properties and stability. This compound is critical for synthesizing vibrant and durable dyes and pigments, offering superior color fastness and consistency in demanding industrial applications. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries seeking reliable intermediates for high-performance colorants.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile coloring.
• Key component in the production of inks for digital and industrial printing applications.
• Used in the formulation of specialty coatings and paints requiring specific color properties and lightfastness.
• Employed as a colorant precursor in the plastics and polymer industries.
• Potential use in the development of biological stains and histochemical dyes for laboratory and diagnostic purposes.
• Research and development of novel functional dyes for optical and electronic applications.

Basic Information

Product Name	Disodium 7-[(4-Aminobenzoyl)Amino]-4-Hydroxy-3-[[3-Methyl-4-[(3-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate
CAS No.	5979-32-8
Molecular Formula	C30H22N6Na2O9S2
Molecular Weight	728.64 g/mol
Synonyms	Acid Red 299; C.I. 18130; Disodium 4-hydroxy-3-[[4-[(3-sulfophenyl)azo]-3-methylphenyl]azo]-7-[(4-aminobenzoyl)amino]-2-naphthalenesulfonate; 7-[(4-Aminobenzoyl)amino]-4-hydroxy-3-[[3-methyl-4-[(3-sulfophenyl)azo]phenyl]azo]-2-naphthalenesulfonic acid disodium salt; C.I. Acid Red 299; Azo dye intermediate 5979-32-8; 2-Naphthalenesulfonic acid, 7-[(4-aminobenzoyl)amino]-4-hydroxy-3-[[3-methyl-4-[(3-sulfophenyl)azo]phenyl]azo]-, disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 7-[(4-Aminobenzoyl)Amino]-4-Hydroxy-3-[[3-Methyl-4-[(3-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC for assay and impurity profiling, to meet the stringent requirements of industrial dye synthesis. Certificates of Analysis (COA) detailing purity, identity, and specific impurity limits are provided with every shipment to guarantee supply reliability and technical 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 tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark red to brown powder
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.