Description

Disodium 8-[(4-Chlorophenyl)Azo]-5-[[4-[Ethyl[(3-Sulphonatophenyl)Methyl]Amino]Phenyl]Azo]Naphthalene-2-Sulphonate is a high-purity, synthetic azo dye intermediate known for its excellent chromophore properties and stability. This compound is critical for manufacturers requiring precise colorant synthesis and consistent batch-to-batch performance for demanding applications. It is primarily utilized by producers of specialty dyes and pigments for textiles, inks, and advanced materials.

Application

• Textile Dye Intermediate: A key precursor for synthesizing high-performance, wash-fast azo dyes for synthetic and natural fibers.
• Inkjet and Printing Inks: Used in the formulation of specialized colorants for high-resolution digital and industrial printing applications.
• Pigment Manufacturing: Serves as a crucial building block in the production of organic pigments for plastics, coatings, and masterbatches.
• Liquid Crystal Display (LCD) Color Filters: Employed in the synthesis of dyes for color filters in electronic display technologies.
• Biological Staining: Potential use as a specialized stain or marker in histological and cytological applications.
• Research & Development: A valuable chemical for academic and industrial R&D in dye chemistry, photochemistry, and material science.

Basic Information

Product Name	Disodium 8-[(4-Chlorophenyl)Azo]-5-[[4-[Ethyl[(3-Sulphonatophenyl)Methyl]Amino]Phenyl]Azo]Naphthalene-2-Sulphonate
CAS No.	85959-34-8
Molecular Formula	C33H27ClN5Na2O6S2
Molecular Weight	742.15 g/mol
Synonyms	Acid Red 337; C.I. 17215; Disodium 5-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl]azo]-8-[(4-chlorophenyl)azo]naphthalene-2-sulfonate; 2,7-Naphthalenedisulfonic acid, 5-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl]azo]-8-[(4-chlorophenyl)azo]-, disodium salt; 85959-34-8; Azo dye intermediate 85959-34-8; Red 337
EINECS	Contact for details

Quality Control

Our Disodium 8-[(4-Chlorophenyl)Azo]-5-[[4-[Ethyl[(3-Sulphonatophenyl)Methyl]Amino]Phenyl]Azo]Naphthalene-2-Sulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent chromophore strength, and low levels of residual impurities. Certificates of Analysis (COA) detailing specifications such as assay, hue value, and impurity profile are provided with each shipment to guarantee compliance with your technical requirements.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, 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%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content (KF)	≤ 5.0%
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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