Description

4-Amino-3-[(2,5-Dichlorophenyl)Azo]-5-Hydroxy-6-[(5-Chloro-2-Phenoxyphenyl)Azo]Naphthalene-2,7-Disulfonic Acid Disodium Salt is a high-purity, disazo dye intermediate with a complex molecular structure designed for specialized colorant synthesis. Its primary commercial value lies in its role as a critical precursor for producing high-performance, colorfast pigments and dyes, particularly in demanding industrial applications. This compound is essential for manufacturers in the textile, ink, and specialty coatings sectors who require precise chromophores to achieve specific, durable hues.

Application

• Primary Intermediate for Azo Pigments: Serves as a key building block in the synthesis of high-grade, complex azo pigments known for their color strength and stability.
• Textile Dye Manufacturing: Used in the production of dyes for synthetic fibers, especially where wash-fastness and light-fastness are critical performance criteria.
• Industrial Ink Formulation: A vital component in creating pigments for printing inks, including those used in packaging and security printing applications.
• Specialty Coatings and Paints: Employed to develop custom colorants for automotive, industrial, and decorative coatings that require resistance to weathering and chemicals.
• Research & Development: Used in chemical R&D laboratories for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Plastics and Polymer Coloring: Acts as a precursor for pigments used to color engineering plastics and polymers during mass coloration processes.

Basic Information

Product Name	4-Amino-3-[(2,5-Dichlorophenyl)Azo]-5-Hydroxy-6-[(5-Chloro-2-Phenoxyphenyl)Azo]Naphthalene-2,7-Disulfonic Acid Disodium Salt
CAS No.	5850-33-9
Molecular Formula	C34H20Cl3N5O8S2Na2
Molecular Weight	858.02 g/mol
Synonyms	Disodium 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-[(5-chloro-2-phenoxyphenyl)azo]naphthalene-2,7-disulphonate; C.I. Pigment Red 247; Azo Dye Intermediate PR247; 4-Amino-3,6-bis(arylazo)-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt derivative; 2,7-Naphthalenedisulfonic acid, 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-[(5-chloro-2-phenoxyphenyl)azo]-, disodium salt; Pigment Red 247 intermediate; Dichloro-Phenoxy Azo Naphthalene Disulfonate Salt
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot is analyzed using advanced techniques including HPLC and spectrophotometry to confirm identity, strength, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing assay, related substances, and physical characteristics is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents. The container must be kept tightly closed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (1% in Water)	Complete, clear solution

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