Description

C.I. Fluorescent Brightener 90 is a high-performance stilbene-based optical brightening agent (OBA) used to enhance the whiteness and brightness of various substrates. This compound is valued for its strong fluorescence under UV light, effectively masking yellowish tints and delivering a visually cleaner, brighter appearance. It is a critical additive for manufacturers in the textile, paper, detergent, and plastics industries seeking to improve the aesthetic quality and perceived value of their products.

Application

• Primary brightener for synthetic fibers like polyester, nylon, and acetate during melt spinning or exhaust dyeing processes.
• Co-brightener in laundry detergents and fabric softeners to impart a "whiter-than-white" look to laundered textiles.
• Surface coating and internal addition agent for high-quality papers, including writing, printing, and packaging grades.
• Brightening additive for plastics and polymers, particularly PVC, polyolefins, and styrenics, to improve visual appeal.
• Used in the production of fluorescent masterbatches for specialized applications.
• Applicable in the formulation of certain coatings and inks where optical brightening is required.

Basic Information

Product Name	C.I. Fluorescent Brightener 90
CAS No.	12224-08-7
Molecular Formula	C₄₀H₄₂N₁₂O₆S₂
Molecular Weight	843.0 g/mol
Synonyms	Fluorescent Brightener 90; FB 90; 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 P 167%; 4,4'-Bis[(4-anilino-6-bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid disodium salt; C.I. 40622
EINECS	235-418-6

Quality Control

Our C.I. Fluorescent Brightener 90 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, physical properties, and performance metrics 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). Keep away from heat sources and incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellowish powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Color Strength	100 ± 3% (vs. Standard)
Shade	Bluish Violet Fluorescence
Moisture Content	≤ 5.0%
Ash Content	≤ 0.5%
Solubility (in water)	Partially soluble; forms colloidal dispersion

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