Description

4-Hydroxy-3-[[2-Methyl-4-[(2-Methylphenyl)Azo]Phenyl]Azo]Naphthalene-2,7-Disulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate. This compound is valued for its precise chemical structure, which is critical for producing consistent and vibrant colorants. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for synthesizing high-performance dyes and pigments.

Application

• Key intermediate for the synthesis of azo dyes and pigments used in textile coloration.
• Used in the production of inks for printing and packaging applications.
• Employed in the manufacture of colorants for plastics and polymers.
• Acts as a precursor for specialty dyes used in biological staining and research.
• Potential use in the formulation of functional dyes for optical and electronic applications.
• Utilized in industrial colorant production for paints and coatings.

Basic Information

Item	Detail
Product Name	4-Hydroxy-3-[[2-Methyl-4-[(2-Methylphenyl)Azo]Phenyl]Azo]Naphthalene-2,7-Disulfonic Acid Disodium Salt
CAS No.	6406-52-6
Molecular Formula	C24H18N4Na2O7S2
Molecular Weight	584.53 g/mol
Synonyms	Acid Red 26; C.I. 16150; Disodium 4-hydroxy-3-((2-methyl-4-((2-methylphenyl)diazenyl)phenyl)diazenyl)naphthalene-2,7-disulfonate; 2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-((2-methyl-4-((2-methylphenyl)azo)phenyl)azo)-, disodium salt; C.I. Acid Red 26; Amacid Red 2B; Eriosin Red 2B
EINECS	229-058-6

Quality Control

Our production of 4-Hydroxy-3-[[2-Methyl-4-[(2-Methylphenyl)Azo]Phenyl]Azo]Naphthalene-2,7-Disulfonic Acid Disodium Salt adheres to stringent quality protocols to ensure batch-to-batch consistency and purity. Each lot is tested against comprehensive specifications, including identity, assay, and impurity profiles. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance processes.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, 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%
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.