Description

5'-(4-Sulfophenyl)-[1,1':3',1''-Terphenyl]-4,4''-Disulfonic Acid is a high-purity, multi-sulfonated aromatic compound with significant utility as a key intermediate and functional additive. Its value lies in its ability to impart water solubility, ionic character, and specific binding sites to complex chemical systems. This product is essential for manufacturers and research institutions in the fine chemical, pharmaceutical, and advanced material sectors requiring precise molecular architecture for specialized applications. The compound, identified by CAS NO 343821-13-6, is supplied under stringent quality control to ensure batch-to-batch consistency.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and diagnostic agents where sulfonic acid groups are critical for bioactivity or solubility.
• Dye & Pigment Manufacturing: Serves as a key building block for producing water-soluble, high-performance dyes, optical brighteners, and colorants.
• Liquid Crystal & OLED Materials: Acts as a functional dopant or intermediate in the production of electronic display materials requiring specific charge transport or alignment properties.
• Ion-Exchange Resins & Membranes: Incorporated as a monomer to create advanced polymeric materials with enhanced ion-exchange capacity for water treatment and separation technologies.
• Catalysis & Ligand Synthesis: Utilized in the development of metal-organic frameworks (MOFs), homogeneous catalysts, and chelating ligands due to its multi-dentate sulfonate structure.
• Analytical Chemistry & Sensors: Functions as a derivatization agent or a core component in chemical sensors and indicators.
• Polymer Modification: Employed to sulfonate polymers, thereby improving their hydrophilicity, antistatic properties, and compatibility in composite materials.

Basic Information

Product Name	5'-(4-Sulfophenyl)-[1,1':3',1''-Terphenyl]-4,4''-Disulfonic Acid
CAS No.	343821-13-6
Molecular Formula	C24H16O9S3
Molecular Weight	560.57 g/mol
Synonyms	4,4'',5''-Terphenyl-2',4''-disulfonic acid, 2'-sulfo-; [1,1':3',1''-Terphenyl]-4,4''-disulfonic acid, 5'-(4-sulfophenyl)-; Terphenyl trisulfonic acid derivative; Trisulfonated terphenyl; 5'-(p-Sulfophenyl)-[1,1':3',1''-terphenyl]-4,4''-disulfonic acid
EINECS	Contact for details

Quality Control

Our 5'-(4-Sulfophenyl)-[1,1':3',1''-Terphenyl]-4,4''-Disulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications. Certificates of Analysis (COA) detailing all critical parameters are available upon request and are provided with every shipment to guarantee traceability and compliance for your internal quality protocols.

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). This product is hygroscopic (moisture-sensitive); ensure the container is sealed immediately after use to prevent absorption of atmospheric moisture, which may affect product performance and stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfate Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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