Description

3-[[4-[[4-[Ethyl[(4-Sulphophenyl)Methyl]Amino]Phenyl]Azo]-1-Naphthyl]Azo]Benzenesulphonic Acid, Sodium 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 textile and specialty ink industries. This compound is essential for manufacturers and R&D laboratories requiring a reliable and consistent building block for colorant production.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile dyeing and printing.
• Key raw material in the production of specialty inks, including those for security printing and high-performance applications.
• Used in the manufacturing of colorants for paper and other cellulose-based products.
• Research and development of novel functional dyes for non-textile applications, such as in optical media or sensors.
• Potential use as a staining agent or colorimetric indicator in analytical chemistry and biological research.
• Intermediate for industrial colorants used in plastics, leather, and coatings where specific color properties are required.

Basic Information

Product Name	3-[[4-[[4-[Ethyl[(4-Sulphophenyl)Methyl]Amino]Phenyl]Azo]-1-Naphthyl]Azo]Benzenesulphonic Acid, Sodium Salt
CAS No.	94109-01-0
Molecular Formula	C32H27N5O6S2Na
Molecular Weight	664.70 g/mol
Synonyms	Acid Red 337; Benzenesulfonic acid, 3-[[4-[[4-[ethyl[(4-sulfophenyl)methyl]amino]phenyl]azo]-1-naphthalenyl]azo]-, sodium salt; C.I. 17210; Sodium 3-[[4-[[4-[ethyl[(4-sulfophenyl)methyl]amino]phenyl]azo]-1-naphthyl]azo]benzenesulfonate; 3-[[4-[[4-[Ethyl(p-sulfobenzyl)amino]phenyl]azo]-1-naphthyl]azo]benzenesulfonic acid sodium salt; Azo dye intermediate 94109-01-0; 3-[(4-{[4-(Ethyl{[(4-sulfophenyl)methyl]amino})phenyl]azo}-1-naphthyl)azo]benzenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. Every lot is analyzed to confirm identity, strength, and the absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and related substance data is provided with each shipment and is available upon request.

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 handling properties.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility	Soluble in water; slightly soluble in ethanol
Heavy Metals (as Pb)	≤ 20 ppm

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