Description

Disodium 3,3'-([1,1'-Biphenyl]-4,4'-Diyldivinylene)Bis[6-Chlorobenzenesulphonate] is a high-purity, synthetic organic compound primarily utilized as a key optical material. This product matters for its ability to impart specific functional properties in advanced material formulations, particularly where precise molecular structure and purity are critical. It is essential for manufacturers and R&D laboratories in the specialty chemical, advanced material science, and electronics sectors seeking reliable, high-grade intermediates.

Application

• Optical Brightening Agent (OBA) or Fluorescent Whitening Agent (FWA) in high-performance papers, textiles, and plastics.
• Key Intermediate for the synthesis of advanced dyes, pigments, and functional colorants.
• Luminescent Material in the research and development of organic light-emitting diodes (OLEDs) and display technologies.
• Fluorescent Probe/Tracer in analytical chemistry and biochemical research applications.
• Additive in specialty coatings and inks where optical properties are required.
• Research Chemical for academic and industrial studies in photochemistry and material science.

Basic Information

Product Name	Disodium 3,3'-([1,1'-Biphenyl]-4,4'-Diyldivinylene)Bis[6-Chlorobenzenesulphonate]
CAS No.	42380-62-1
Molecular Formula	C28H18Cl2Na2O6S2
Molecular Weight	639.44 g/mol
Synonyms	Disodium 4,4'-Bis[(2-chloro-5-sulfophenyl)vinyl]biphenyl-3,3'-disulfonate; 4,4'-Bis[(2-chloro-5-sulfophenyl)vinyl]biphenyl-3,3'-disulfonic Acid Disodium Salt; Fluorescent Brightener 220; FWA 220; CBS 220; Biphenyl-based Optical Brightener; 4,4'-Bis(2-sulfo-4-chlorostyryl)biphenyl Disodium Salt; 4,4'-Bis[(2-chloro-5-sulfophenyl)ethenyl]-1,1'-biphenyl Disodium Salt
EINECS	Contact for details

Quality Control

Our Disodium 3,3'-([1,1'-Biphenyl]-4,4'-Diyldivinylene)Bis[6-Chlorobenzenesulphonate] is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards and consistent performance specifications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to light yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility (1% in Water)	Clear, yellow solution

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