Description

3-[(4-Amino-3-Methylphenyl)Azo]Benzenesulfonic Acid is a specialized azo dye intermediate, also known as a diazo component, with the CAS number 55994-13-3. Its primary value lies in its role as a key building block for synthesizing a range of high-performance dyes and pigments, offering precise color properties and structural stability. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries who require consistent quality and reliable supply for their production processes.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial coupling component in the synthesis of acid dyes, direct dyes, and other azo colorants for textiles and leather.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics, where lightfastness and color strength are critical.
• Research & Development: Employed in chemical research for developing novel chromophores and functional dyes with specific optical properties.
• Specialty Chemical Synthesis: Acts as a precursor for more complex sulfonated aromatic compounds used in various industrial applications.

Basic Information

Product Name	3-[(4-Amino-3-Methylphenyl)Azo]Benzenesulfonic Acid
CAS No.	55994-13-3
Molecular Formula	C13H13N3O3S
Molecular Weight	291.32 g/mol
Synonyms	3-[(4-Amino-3-methylphenyl)diazenyl]benzenesulfonic acid; Benzenesulfonic acid, 3-[(4-amino-3-methylphenyl)azo]-; 4-Amino-3-methylazobenzene-3'-sulfonic acid; C.I. Azoic Coupling Component; Azo dye intermediate 55994-13-3; 3-(4-Amino-3-methylphenylazo)benzenesulphonic acid; 3-[(4-Amino-3-methylphenyl)hydrazinylidene]cyclohexa-1,4-diene-1-sulfonic acid (tautomer)
EINECS	Contact for details

Quality Control

Our production of 3-[(4-Amino-3-Methylphenyl)Azo]Benzenesulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and spectrophotometry to verify identity, assay, and impurity profiles. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to support your quality assurance and regulatory needs.

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 sealed when not in use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%, Total impurities ≤ 2.0%

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