Description

4,4'-Diaminodiphenylether-2-Sulfonic Acid is a specialized aromatic diamine sulfonic acid derivative that serves as a critical high-value intermediate in advanced chemical synthesis. Its unique bifunctional structure, containing both amine and sulfonic acid groups, makes it an essential building block for creating complex molecules with tailored properties. This compound is primarily sought after by manufacturers in the pharmaceutical, agrochemical, and specialty dye industries for the development of active ingredients and functional colorants.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for dyes used in diagnostic assays and specialized therapeutics.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where its sulfonic acid group aids in solubility and bioavailability.
• Specialty Dye and Pigment Manufacturing: Serves as a crucial diazo component and coupling agent for producing high-performance azo dyes, pigments, and optical brighteners.
• Polymer Modification: Employed to introduce sulfonic acid functionality into polymers, enhancing properties like hydrophilicity, ion-exchange capacity, or dyeability for advanced materials.
• Research & Development: Utilized in academic and industrial R&D labs for exploring new chemical entities and material science applications.
• Liquid Crystal and Electronic Material Precursor: A potential intermediate in the synthesis of monomers for specialty polymers used in electronic displays and advanced optics.

Basic Information

Product Name	4,4'-Diaminodiphenylether-2-Sulfonic Acid
CAS No.	6411-63-8
Molecular Formula	C12H12N2O4S
Molecular Weight	280.30 g/mol
Synonyms	4,4'-Oxydianiline-2-sulfonic Acid; 2-Sulfo-4,4'-oxydianiline; 4-Amino-4'-(2-sulfoanilino)diphenyl Ether; Bis(4-aminophenyl) Ether-2-sulfonic Acid; 4,4'-Diaminodiphenyl Ether-2-sulfonic Acid; ODAS; DADPSA; 4,4'-Diaminophenyl Ether-2-sulfonic Acid
EINECS	229-122-2

Quality Control

Our production of 4,4'-Diaminodiphenylether-2-Sulfonic Acid adheres to a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and reliable performance for your synthesis processes. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality commitment supports applications requiring traceability and regulatory compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Light yellow to beige crystalline powder
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)	Total impurities ≤ 2.0%
Solubility (Test)	Soluble in alkaline aqueous solutions

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