Description

Fluorescent Brightener 363 is a high-performance stilbene-based optical brightening agent (OBA) designed to impart a brilliant white appearance to various substrates. Its core value lies in its exceptional whitening and brightening efficacy, which enhances the perceived cleanliness, quality, and visual appeal of finished products. This agent is essential for manufacturers in the plastics, synthetic fibers, detergent, and paper industries seeking to achieve superior optical properties and meet stringent quality standards. Fluorescent Brightener 363 CAS NO 95078-19-6 is known for its good compatibility and stability in polymer matrices and formulations.

Application

• Plastics and Polymers: Widely used in polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), and polystyrene (PS) to eliminate yellowing and produce brilliantly white or clear-blue tone articles.
• Synthetic Fibers: Effective in whitening polyester (PET), nylon, and acetate fibers during mass pigmentation or surface treatment processes.
• Detergents and Laundry Care: Incorporated into laundry detergents, fabric softeners, and soaps to provide a whitening effect on textiles, compensating for fiber yellowing.
• Paper and Pulp: Used in coating formulations and pulp to enhance the brightness and whiteness of high-quality printing paper, tissue, and board.
• Coatings and Inks: Applied in specific coating systems and printing inks to improve optical brightness and opacity.
• Advanced Materials: Potential use in specialty applications such as security printing, optical sensors, or light-converting agricultural films.

Basic Information

Product Name	Fluorescent Brightener 363
CAS No.	95078-19-6
Molecular Formula	C₄₀H₄₂N₁₂O₆S₂
Molecular Weight	851.0 g/mol
Synonyms	2,2'-(1,2-Ethenediyl)bis[5-[4-[bis(2-hydroxyethyl)amino]-6-(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]benzenesulfonic acid disodium salt; FB 363; Optical Brightener 363; Tinopal CBS-X; Blankophor BSU; Fluorescent Whitening Agent 363; Stilbene triazine brightener 363; 4,4'-Bis[(4-anilino-6-bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our Fluorescent Brightener 363 is manufactured under a strict quality management system. Every batch undergoes rigorous testing for key parameters including purity, hue, and strength to ensure consistent performance and compliance with industry specifications. Certificates of Analysis (COA) documenting these results 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). Keep away from incompatible materials and sources of heat. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellowish-green powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Strength (vs. Std.)	98 - 102%
Moisture Content	≤ 5.0%
Ash Content	≤ 0.5%
pH (1% Solution)	7.0 - 9.0
Water Solubility	Good

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