Description

Disodium 6-Amino-5-[(5-Chloro-4-Methyl-2-Sulphonatophenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing vibrant and stable colorants, particularly in applications requiring specific shade and fastness properties. It is primarily sought after by manufacturers in the textile dyeing, ink formulation, and specialty pigment industries for producing high-performance dyes.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-quality reactive dyes for cotton and cellulose fiber dyeing.
• Textile Colorant Production: Used to manufacture azo dyes that offer excellent color strength, wash fastness, and lightfastness for textiles.
• Ink and Toner Formulations: Serves as a precursor for colorants used in industrial inks, including inks for digital textile printing and specialty toners.
• Specialty Pigment Synthesis: Employed in the production of pigments for plastics, coatings, and other polymer applications where color stability is critical.
• Laboratory and R&D: Used as a reference standard and research chemical in analytical chemistry and new dye development projects.

Basic Information

Item	Details
Product Name	Disodium 6-Amino-5-[(5-Chloro-4-Methyl-2-Sulphonatophenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonate
CAS No.	68631-11-8
Molecular Formula	C17H11ClN3Na2O8S2
Molecular Weight	531.85 g/mol
Synonyms	6-Amino-5-[(5-chloro-4-methyl-2-sulfophenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid, disodium salt; C.I. Reactive Orange 13 intermediate; Disodium 6-amino-4-hydroxy-5-[(5-chloro-4-methyl-2-sulfonatophenyl)azo]naphthalene-2-sulfonate; Azo dye intermediate 68631-11-8; 5-[(5-Chloro-4-methyl-2-sulfophenyl)azo]-6-amino-4-hydroxy-2-naphthalenesulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 6-Amino-5-[(5-Chloro-4-Methyl-2-Sulphonatophenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonate is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for use in sensitive dye synthesis. Certificates of Analysis (COA) documenting batch-specific results are available upon request to support your quality assurance protocols.

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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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