Description

Fluorescent Brightening Agent 289 is a high-performance stilbene derivative optical brightener. This compound is engineered to absorb ultraviolet light and re-emit it as visible blue light, effectively enhancing the whiteness and brightness of treated materials. It is a critical additive for manufacturers in the textile, paper, and detergent industries seeking to achieve superior visual appeal and product quality in their finished goods.

Application

• Primary whitening agent for synthetic fibers, including polyester, nylon, and acetate.
• Brightening of paper pulp and coatings to produce high-quality, brilliant white paper products.
• Key ingredient in household and industrial laundry detergents and fabric softeners.
• Enhancement of plastic polymers, such as PVC and polyolefins, to improve aesthetic appearance.
• Application in the textile industry for exhaust and continuous bleaching processes.
• Use in the production of specialty paints and coatings where optical brightness is required.

Basic Information

Product Name	Fluorescent Brightening Agent 289
CAS No.	71872-59-8
Molecular Formula	C₄₀H₄₂N₁₂O₆S₂
Molecular Weight	842.98 g/mol
Synonyms	FBA 289; Optical Brightener 289; 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; Tinopal CBS-X; Blankophor BBH; 4,4'-Bis[[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonic acid disodium salt; Fluorescent Whitening Agent 289
EINECS	Contact for details

Quality Control

Our Fluorescent Brightening Agent 289 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent performance in key parameters such as hue, strength, and solubility. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance, and physical properties is provided with each shipment to guarantee it meets your specific application requirements.

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). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellowish-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Moisture Content	≤ 2.0%
Ash Content	≤ 0.5%
Absorbance (348 nm)	Conforms to standard range
Solubility in Water	Clear, yellow-green solution

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