Description

4,4'-[(Phenylimino)Bis(Methylene)]Bis(Benzenesulphonic) Acid is a specialized organic sulfonic acid derivative with a unique molecular structure, serving as a critical intermediate in advanced chemical synthesis. This compound matters for its role in facilitating complex reactions, particularly in the production of dyes, pigments, and functional polymers where precise molecular architecture is required. Industries such as specialty chemicals, advanced materials research, and fine chemical manufacturing need this high-purity intermediate to ensure consistent performance and quality in their final products.

Application

• Dye and Pigment Intermediate: A key building block in the synthesis of complex azo dyes, acid dyes, and high-performance organic pigments.
• Polymer Modification: Used to introduce sulfonic acid groups into polymer chains, enhancing properties like hydrophilicity, ion-exchange capacity, or dyeability.
• Chemical Synthesis Reagent: Acts as a versatile intermediate or catalyst in organic synthesis, particularly in reactions requiring a strong acid functionality in a controlled manner.
• Research & Development: Employed in academic and industrial R&D for developing new materials, such as conductive polymers or advanced surfactants.
• Pharmaceutical Intermediate: Potential use in the synthesis of certain active pharmaceutical ingredients (APIs) that incorporate sulfonic acid moieties.
• Cross-linking Agent: Can be utilized in the production of resins or as a cross-linking agent due to its bifunctional reactive sites.

Basic Information

Product Name	4,4'-[(Phenylimino)Bis(Methylene)]Bis(Benzenesulphonic) Acid
CAS No.	94166-71-9
Molecular Formula	C26H23NO6S2
Molecular Weight	509.59 g/mol
Synonyms	4,4'-[(Phenylimino)dimethylene]dibenzenesulfonic Acid; Benzenesulfonic acid, 4,4'-[(phenylimino)bis(methylene)]bis-; N,N-Bis(4-sulfobenzyl)aniline; 4,4'-(Phenylimino)bis(methylene)dibenzenesulfonic Acid; Bis(4-sulfobenzyl)aniline; 4,4'-(Phenyliminodimethylene)dibenzenesulfonic Acid; Aniline, N,N-bis(4-sulfobenzyl)-; 94166-71-9
EINECS	Contact for details

Quality Control

Our 4,4'-[(Phenylimino)Bis(Methylene)]Bis(Benzenesulphonic) Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing results from HPLC, NMR, and titration methods. Our commitment to consistent quality and traceability supports your R&D and production needs with reliable material performance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This compound is a strong acid and should be kept separate from incompatible materials such as strong bases and oxidizing agents. The container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in alkaline aqueous solutions and polar organic solvents

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