Description

2-(4-Amino-5-Methoxy-2-Methylphenylazo)Benzenesulfonic Acid is a specialized azo dye intermediate of significant commercial importance. This compound serves as a critical precursor in the synthesis of high-value, colorfast dyes and pigments, enabling precise color development. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking to produce vibrant and stable colorants.

Application

• Primary Intermediate for Azo Dyes: Key building block for synthesizing a wide range of orange, red, and brown azo dyes used in textile dyeing and printing.
• Pigment Manufacturing: Utilized in the production of organic pigments for inks, coatings, and plastics, where color stability is paramount.
• Specialty Chemical Synthesis: Serves as a versatile intermediate in fine chemical and pharmaceutical research for constructing complex molecular structures.
• Laboratory Reagent: Used in research and development settings for studying azo coupling reactions and dye chemistry.

Basic Information

Product Name	2-(4-Amino-5-Methoxy-2-Methylphenylazo)Benzenesulfonic Acid
CAS No.	59487-17-1
Molecular Formula	C14H15N3O4S
Molecular Weight	321.35 g/mol
Synonyms	Benzenesulfonic acid, 2-[(4-amino-5-methoxy-2-methylphenyl)azo]-; 4-Amino-5-methoxy-2-methylazobenzene-2'-sulfonic acid; 2-(4-Amino-5-methoxy-2-methylphenylazo)benzenesulphonic acid; Azo dye intermediate 59487-17-1; 2-[(4-Amino-5-methoxy-2-methylphenyl)diazenyl]benzenesulfonic acid; 2-(4-Amino-5-methoxy-o-tolylazo)benzenesulfonic acid; CI 37120 (related).
EINECS	Contact for details

Quality Control

Our production of 2-(4-Amino-5-Methoxy-2-Methylphenylazo)Benzenesulfonic Acid adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against rigorous in-house specifications, which typically include identity confirmation, assay, and impurity profile analysis. A Certificate of Analysis (COA) detailing all test results is provided with every 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). Keep away from incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

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.