Description

2-(Diphenylphosphino)Benzenesulfonic Acid is a versatile organophosphorus ligand and sulfonic acid derivative, valued for its unique bifunctional properties. This compound is particularly significant as a water-soluble ligand in transition metal catalysis, enabling efficient reactions in aqueous or biphasic systems. It is essential for researchers and manufacturers in the fields of homogeneous catalysis, pharmaceutical intermediate synthesis, and fine chemical production.

Application

• Homogeneous Catalysis: As a water-soluble ligand for palladium, rhodium, and ruthenium catalysts in cross-coupling, hydrogenation, and hydroformylation reactions.
• Pharmaceutical Intermediates: Synthesis of complex drug molecules where aqueous-phase catalytic steps are advantageous.
• Fine Chemical Manufacturing: Production of specialty chemicals, flavors, and fragrances requiring selective catalytic processes.
• Academic & Industrial Research: A key reagent for developing new catalytic methodologies and green chemistry applications.
• Polymer Chemistry: Potential use as a functional monomer or catalyst component in polymer synthesis.

Basic Information

Product Name	2-(Diphenylphosphino)Benzenesulfonic Acid
CAS No.	111864-25-6
Molecular Formula	C18H15O3PS
Molecular Weight	342.35 g/mol
Synonyms	2-(Diphenylphosphino)benzenesulfonic acid; (2-Sulfophenyl)diphenylphosphine; Diphenyl(2-sulfophenyl)phosphine; 2-(Diphenylphosphanyl)benzenesulfonic acid; TPPMS (Triphenylphosphine monosulfonate sodium salt is a related compound); P,P-Diphenyl-P-(2-sulfophenyl)phosphine; Benzenesulfonic acid, 2-(diphenylphosphino)-; Ligand for aqueous-phase catalysis
EINECS	Contact for details

Quality Control

Our 2-(Diphenylphosphino)Benzenesulfonic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity, NMR for structural confirmation, and elemental analysis, to ensure it meets the high standards required for catalytic and synthetic applications. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic and easily oxidized nature, it is recommended to handle and store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%

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