Description

Tinolux Bbs CAS NO 131595-16-9 is a high-performance optical brightener agent (OBA) belonging to the stilbene derivative class. This compound is engineered to enhance the whiteness and brightness of materials by absorbing ultraviolet light and re-emitting it as visible blue light, a critical property for achieving superior visual appeal in finished products. It is an essential additive for manufacturers in the plastics, synthetic fibers, coatings, and detergent industries seeking to improve product aesthetics and market competitiveness.

Application

• Synthetic Fibers & Textiles: Primary application for whitening and brightening polyester, nylon, and acetate fibers during melt spinning or in subsequent finishing processes.
• Plastics and Polymers: Used as a masterbatch additive to brighten engineering plastics, PVC, polyolefins (PP, PE), and polystyrene for applications in packaging, consumer goods, and automotive parts.
• Detergent and Laundry Care: Incorporated into laundry detergents, fabric softeners, and soaps to impart a "whiter-than-white" appearance to fabrics during washing.
• Paper and Pulp Industry: Applied in coating formulations to achieve high brightness grades in fine papers, photographic papers, and board.
• Coatings and Inks: Enhances the brightness and opacity of paints, lacquers, and printing inks, particularly where UV resistance and color stability are required.
• Advanced Materials: Potential use in specialty applications such as security printing, optical films, and light-converting agricultural films.

Basic Information

Item	Detail
Product Name	Tinolux Bbs
CAS No.	131595-16-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	4,4'-Bis(2-sulfostyryl)biphenyl disodium salt; Tinopal CBS-X; Fluorescent Brightener 351; C.I. Fluorescent Brightener 351; FBA 351; Optical Brightener OB-351; Stilbene-based brightener; Distyrylbiphenyl derivative
EINECS	Contact for details

Quality Control

Every batch of Tinolux Bbs is manufactured and tested under a strict quality management system to ensure consistent performance and purity. Our standard industrial grade meets rigorous in-house specifications for key parameters such as brightening strength, hue, and solubility. While not typically USP/EP grade, our quality protocol ensures reliability for industrial applications. A Certificate of Analysis (COA) documenting purity, assay, and physical properties is provided with each shipment to guarantee traceability and compliance with your specifications.

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 heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct sunlight or strong artificial light should be avoided to prevent degradation of the brightening effect.

Specification

Item	Specification
Appearance	Light yellow to yellowish-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Brightening Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Ash Content	≤ 0.5%
Solubility (in water)	Clear, yellow solution at 1%
pH (1% aqueous solution)	7.0 - 9.0

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