Description

Fluorescent Brightener 368 CAS NO 117313-08-3 is a high-performance stilbene-based optical brightening agent (OBA) designed to impart a brilliant white appearance to various substrates. This compound is critical for manufacturers seeking to enhance the perceived whiteness, brightness, and overall visual appeal of their products under UV or daylight illumination. It is an essential additive for industries where superior optical performance and color correction are key competitive advantages.

Application

Fluorescent Brightener 368 is widely used as a whitening and brightening agent across multiple industrial sectors. Its primary applications include:

• Synthetic Fibers & Plastics: Effective whitener for polyester (PET), nylon, PVC, and other polymers during melt spinning or molding.
• Detergents & Laundry Care: Key ingredient in premium laundry detergents and fabric softeners to compensate for fabric yellowing and deliver a "whiter-than-white" effect.
• Paper & Packaging: Used in coating formulations and pulp to achieve high brightness grades in fine papers, tissues, and cardboard.
• Coatings & Inks: Incorporated into paints, varnishes, and printing inks to improve luminosity and mask inherent yellowness.
• Textile Finishing: Applied in finishing baths for textiles to enhance the brightness of fabrics, particularly in challenging applications.

Basic Information

Product Name	Fluorescent Brightener 368
CAS No.	117313-08-3
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; FB 368; Optical Brightener 368; Fluorescent Whitening Agent 368; Tinopal CBS-X; Blankophor BBH; OBA 368; Stilbene Brightener 368
EINECS	Contact for details

Quality Control

Our Fluorescent Brightener 368 is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent performance, including purity, hue, and solubility. We provide comprehensive Certificates of Analysis (COA) that detail all critical parameters, ensuring traceability and compliance with your specifications and industry standards.

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. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Yellowish-green powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Moisture Content	≤ 2.0%
Ash Content	≤ 0.5%
Whiteness Degree	Standard sample comparison
Solubility (in water)	Slightly soluble

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