Description

2,5-Diamino-4-Methoxybenzenesulphonic Acid is a specialized aromatic sulfonic acid derivative that serves as a critical intermediate in advanced organic synthesis. Its value lies in its bifunctional amino and sulphonic acid groups, which enable its use in the production of high-performance dyes and pigments. This compound is essential for manufacturers in the dye and pigment industry, as well as for research institutions developing novel functional materials and pharmaceutical intermediates.

Application

• Primary intermediate in the synthesis of high-value azo dyes and pigments.
• Key building block for hair dye formulations and other cosmetic colorants.
• Precursor in the manufacture of specialty polymers and functional materials.
• Used in research and development of pharmaceutical intermediates and active ingredients.
• Employed in the production of photographic chemicals and light-sensitive materials.
• Acts as a coupling agent in various organic synthesis processes.

Basic Information

Product Name	2,5-Diamino-4-Methoxybenzenesulphonic Acid
CAS No.	6409-55-8
Molecular Formula	C7H10N2O4S
Molecular Weight	218.23 g/mol
Synonyms	2,5-Diamino-4-methoxybenzenesulfonic acid; 4-Methoxy-1,3-benzenediamine-6-sulfonic acid; 2-Amino-4-methoxy-5-aminobenzenesulfonic acid; 2,5-Diaminoanisole-4-sulfonic acid; 1,3-Diamino-6-methoxybenzene-4-sulfonic acid; 4-Methoxy-m-phenylenediamine-6-sulfonic acid; 2,5-Diamino-4-methoxyphenylsulfonic acid
EINECS	229-084-9

Quality Control

Our 2,5-Diamino-4-Methoxybenzenesulphonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee consistency and traceability for your critical applications.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and stability.

Specification

Item	Specification
Appearance	Light brown to grayish powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 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.