Description

4-Methoxyaniline-2,5-Disulfonic Acid is a key aromatic sulfonic acid derivative and an important organic synthesis intermediate. This compound matters for its role as a versatile building block in the production of high-value dyes, pigments, and functional chemicals. It is primarily needed by manufacturers in the dyestuff, pharmaceutical, and specialty chemical industries seeking to introduce specific functional groups into complex molecules.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of azo dyes, acid dyes, and reactive dyes, contributing to color development and solubility.
• Pharmaceutical Synthesis: Serves as a building block for active pharmaceutical ingredients (APIs) and fine chemicals requiring specific sulfonated aniline structures.
• Functional Chemical Production: Used in the manufacture of optical brighteners, liquid crystal materials, and other advanced organic compounds.
• Research & Development: Employed in chemical research for developing new sulfonated polymers and materials with tailored properties.
• Chemical Modification Agent: Utilized to introduce sulfonic acid groups into other organic molecules, altering their solubility and reactivity.

Basic Information

Product Name	4-Methoxyaniline-2,5-Disulfonic Acid
CAS No.	83763-33-1
Molecular Formula	C7H9NO7S2
Molecular Weight	283.28 g/mol
Synonyms	2,5-Disulfo-4-methoxyaniline; 4-Amino-2,5-dimethoxybenzenesulfonic Acid; 4-Methoxy-2,5-benzenedisulfonic acid, 1-amino-; 1-Amino-4-methoxybenzene-2,5-disulfonic acid; p-Anisidine-2,5-disulfonic acid; 4-Methoxyaniline-2,5-disulfonic Acid Sodium Salt (related salt form); 2,5-Disulfonic Acid-4-Methoxyaniline
EINECS	Contact for details

Quality Control

Our 4-Methoxyaniline-2,5-Disulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and meets the specifications required for industrial synthesis. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics are available upon request to support your quality assurance protocols.

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 strong oxidizing agents, strong bases, and incompatible materials. Due to the presence of sulfonic acid groups, the material may be hygroscopic; ensure containers are sealed properly after use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Off-white to light brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
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.