Description

Benzenesulfonic Acid, 4-Amino-, Diazotized, Coupled With 4-Methyl-1,3-Benzenediamine And m-Phenylenediamine, Sodium Salt is a high-purity, water-soluble azo dye intermediate and colorant. This compound is valued for its ability to impart consistent, vibrant color and its compatibility with various industrial dyeing and printing processes. It is primarily required by manufacturers in the textile, leather, ink, and specialty paper industries seeking reliable and high-performance colorant components.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile dyeing and printing.
• Colorant component in the formulation of inks for packaging, publishing, and specialty printing applications.
• Key ingredient in the production of dyes for leather finishing and coloration.
• Used in the manufacturing of colorants for paper products, including specialty and decorative papers.
• Potential use as a biological stain or histological dye in laboratory and diagnostic settings.
• Intermediate for research and development of novel functional dyes with specific optical or chemical properties.

Basic Information

Product Name	Benzenesulfonic Acid, 4-Amino-, Diazotized, Coupled With 4-Methyl-1,3-Benzenediamine And m-Phenylenediamine, Sodium Salt
CAS No.	85203-66-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	4-Aminobenzenesulfonic acid, diazotized, coupled with 4-methyl-1,3-benzenediamine and m-phenylenediamine, sodium salt; Azo dye intermediate derived from 4-aminobenzenesulfonic acid; Sodium salt of a diazo coupling product; C.I. Azoic Coupling Component; Benzenesulfonic acid, 4-amino-, diazotized, coupled with 4-methyl-m-phenylenediamine and m-phenylenediamine, sodium salt
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Every batch is controlled for identity, purity, and consistency to meet the demanding requirements of dye and pigment manufacturing. Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and solubility are 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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Powder or crystalline solid
Color	Characteristic color (e.g., dark brown to black)
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Solubility (Water)	Freely soluble
Loss on Drying	Max. 2.0%
Heavy Metals (as Pb)	Max. 20 ppm

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