Description

Fluorescentbrighteningagent199 is a high-performance optical brightening agent (OBA) belonging to the stilbene derivative class. It is engineered to absorb ultraviolet light and re-emit it as visible blue light, thereby enhancing the perceived whiteness and brightness of treated materials. This compound is essential for manufacturers seeking to achieve superior visual appeal and color correction in a wide range of substrates. Key industries that rely on this agent include paper production, textile finishing, detergent formulations, and polymer processing.

Application

• Primary whitening and brightening agent in the manufacture of high-quality papers, including printing, writing, and tissue grades.
• Critical component in laundry detergents and fabric softeners to impart a "whiter-than-white" appearance to textiles.
• Enhancement of brightness and color neutrality in synthetic fibers, such as polyamide (nylon) and polyester, during polymer synthesis or finishing.
• Application in plastics and polymer masterbatches to improve the initial whiteness and counteract yellowing.
• Use in coatings and specialty paints where optical brightness is a key performance parameter.
• Formulation into liquid and powder brightening agents for the textile wet processing industry.

Basic Information

Product Name	Fluorescentbrighteningagent199
CAS No.	58449-88-0
Molecular Formula	C₄₀H₄₂N₁₂O₆S₂
Molecular Weight	843.0 g/mol
Synonyms	Fluorescent Brightener 199; FBA 199; Optical Brightener 199; 2,2'-(1,2-Ethenediyl)bis[5-[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]benzenesulfonic acid disodium salt; Tinopal UNPA-GX; Blankophor BSU; 4,4'-Bis[[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our production of Fluorescentbrighteningagent199 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is subjected to comprehensive analytical testing, including HPLC for purity, spectrophotometry for strength, and physical property checks. A Certificate of Analysis (COA) detailing all test results is provided with each shipment, ensuring full transparency and compliance with your quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellowish-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Moisture Content	≤ 2.0%
Ash Content	≤ 0.5%
pH (1% Solution)	7.0 - 9.0
Whiteness Degree	Standard sample comparison

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