Description

4-[(4-Amino-5-Methoxy-2-Methylphenyl)Azo]Benzenesulfonic Acid is a specialized azo dye intermediate, valued for its role in synthesizing high-performance colorants. This compound matters for its ability to impart specific, stable hues and functional properties to final products, making it a critical component in advanced manufacturing. It is primarily needed by industries focused on the production of dyes, pigments, and functional materials where precise color chemistry is essential.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-value, complex azo colorants.
• Textile Dye Manufacturing: Used in the production of dyes for coloring natural and synthetic fibers.
• Specialty Ink Formulation: A component in the manufacture of inks for printing and packaging applications.
• Functional Material Synthesis: Potential use in creating materials for sensors or light-absorbing applications due to its azo chromophore structure.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo coupling reactions.

Basic Information

Product Name	4-[(4-Amino-5-Methoxy-2-Methylphenyl)Azo]Benzenesulfonic Acid
CAS No.	40947-69-1
Molecular Formula	C14H15N3O4S
Molecular Weight	321.35 g/mol
Synonyms	Benzenesulfonic acid, 4-[(4-amino-5-methoxy-2-methylphenyl)azo]-; 4-[(4-Amino-5-methoxy-2-methylphenyl)diazenyl]benzenesulfonic acid; 2-Methyl-4-amino-5-methoxyazobenzene-4'-sulfonic acid; Azo dye intermediate 40947-69-1; 4-Amino-5-methoxy-2-methyl-4'-sulfoazobenzene; 4-Amino-5-methoxy-2-methylazobenzene-4'-sulfonic acid; 4'-Sulfo-4-amino-5-methoxy-2-methylazobenzene
EINECS	Contact for details

Quality Control

Our 4-[(4-Amino-5-Methoxy-2-Methylphenyl)Azo]Benzenesulfonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics is 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 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 quality.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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