Description

2-Anisidine-4-Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a vital intermediate in the synthesis of high-value dyes and pigments. Its molecular structure provides the necessary coupling and chromophoric properties essential for producing vibrant and stable colorants. This compound is primarily sought after by manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries for creating azo dyes and other complex organic molecules.

Application

• Primary Intermediate for Azo Dyes and Pigments: Used in the synthesis of various acid, direct, and reactive dyes, imparting colors like reds, oranges, and browns for textiles, leather, and paper.
• Pharmaceutical Intermediate: Acts as a building block in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Research & Development Chemical: Employed in organic synthesis and chemical research for developing new compounds and materials.
• Specialty Chemical Synthesis: Used in the production of optical brighteners, liquid crystal materials, and other functional chemicals.

Basic Information

Product Name	2-Anisidine-4-Sulfonic Acid
CAS No.	98-42-0
Molecular Formula	C7H9NO4S
Molecular Weight	203.22 g/mol
Synonyms	o-Anisidine-4-sulfonic Acid; 2-Methoxyaniline-4-sulfonic Acid; 4-Sulfo-o-anisidine; 2-Amino-5-methoxybenzenesulfonic Acid; 5-Methoxy-2-aminobenzenesulfonic Acid; 2-Methoxy-5-aminobenzenesulfonic Acid; Fast Scarlet GG Base; C.I. 37110
EINECS	202-668-6

Quality Control

Our 2-Anisidine-4-Sulfonic Acid is produced under stringent quality management systems. Every batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming parameters such as purity, identity, and impurity profiles. We adhere to relevant industry standards to guarantee consistency and reliability for your production processes.

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.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
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.