Description

6-(5-Chloro-2-Hydroxy-4-Sulfophenylazo)-5-Hydroxy-1-Naphthalenesulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its primary value lies in its role as a key precursor for synthesizing a range of vibrant and stable dyes and pigments, particularly in the production of acid and reactive dyes. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to develop products with specific color characteristics and fastness properties.

Application

• Primary Intermediate for Dye Synthesis: A crucial building block in the manufacture of acid dyes for wool, silk, and nylon.
• Reactive Dye Production: Used in the synthesis of reactive dyes for cotton and other cellulosic fibers, providing excellent wash-fastness.
• Leather Coloring Agent: Serves as an intermediate for dyes used in the leather tanning and finishing industry.
• Specialty Ink Formulation: Employed in the production of colorants for inks used in packaging, security printing, and digital applications.
• Paper Dyeing: Used in the manufacture of dyes for coloring paper and paperboard products.
• Research & Development: A valuable chemical for R&D laboratories exploring new chromophores, colorants, and analytical applications.

Basic Information

Product Name	6-(5-Chloro-2-Hydroxy-4-Sulfophenylazo)-5-Hydroxy-1-Naphthalenesulfonic Acid Disodium Salt
CAS No.	3624-68-8
Molecular Formula	C16H9ClN2Na2O9S2
Molecular Weight	534.81 g/mol
Synonyms	Acid Red 114 Intermediate; C.I. 23635 Intermediate; 5-Hydroxy-6-[(5-chloro-2-hydroxy-4-sulfophenyl)azo]-1-naphthalenesulfonic acid disodium salt; 6-(5-Chloro-2-hydroxy-4-sulfophenylazo)-5-hydroxynaphthalene-1-sulfonic acid disodium salt; 5-Hydroxy-6-[(5-chloro-2-hydroxy-4-sulfophenyl)hydrazinylidene]naphthalene-1-sulfonic acid disodium salt; Mordant Blue 9 Intermediate (related); Azo dye intermediate 3624-68-8.
EINECS	222-842-3

Quality Control

Our production of 6-(5-Chloro-2-Hydroxy-4-Sulfophenylazo)-5-Hydroxy-1-Naphthalenesulfonic Acid Disodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing purity, impurity profile, and physical characteristics are provided with each shipment to guarantee traceability and 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 (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product stability and performance.

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	≤ 30.0%
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.