Description

4,4'-Bis(2-Disulfonic Acid Styryl) Biphenyl is a high-purity, functionalized organic compound belonging to the stilbene derivative family. This chemical is valued for its unique optical properties and strong anionic character, making it a critical intermediate in advanced material synthesis. It is primarily sought by manufacturers in the specialty chemical, optical brightener, and advanced polymer industries for applications requiring precise molecular architecture and consistent performance.

Application

• Optical Brightening Agent (OBA) Synthesis: A key intermediate in the production of high-efficiency fluorescent whitening agents for paper, textiles, and detergents.
• Liquid Crystal Display (LCD) Materials: Used in the development of photoalignment layers and other functional components for display technologies.
• Fluorescent Probes and Sensors: Serves as a building block for creating sensitive molecular probes used in bioimaging and analytical chemistry.
• Polymer Modification: Imparts anionic and fluorescent characteristics to polymers for specialty coatings and films.
• Dye and Pigment Intermediate: Employed in the synthesis of sulfonated dyes with enhanced water solubility and color fastness.
• Research & Development: Utilized in academic and industrial R&D for studying charge transfer, fluorescence, and supramolecular assembly.

Basic Information

Product Name	4,4'-Bis(2-Disulfonic Acid Styryl) Biphenyl
CAS No.	54351-85-8
Molecular Formula	C28H22O12S4
Molecular Weight	678.73 g/mol
Synonyms	4,4'-Bis(2-sulfonatostyryl)biphenyl; 4,4'-Distyrylbiphenyl-2,2'-disulfonic acid; DSD Acid; Fluorescent Brightener DSD; Tinopal CBS-X; CBS-X; 2,2'-(1,1'-Biphenyl)-4,4'-diylbis(2-sulfoethene-2,1-diyl)dibenzenesulfonic acid; 4,4'-Bis[(2-sulfophenyl)ethenyl]-1,1'-biphenyl
EINECS	Contact for details

Quality Control

Our production of 4,4'-Bis(2-Disulfonic Acid Styryl) Biphenyl adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for critical applications like optical brighteners. A Certificate of Analysis (COA) documenting batch-specific results is provided with each shipment to guarantee traceability and 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). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Yellow to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
pH (1% Solution)	2.0 - 4.0
Heavy Metals (as Pb)	≤ 20 ppm

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