Description

Fluorescent Brightener 184 is a high-performance stilbene-based optical brightening agent (OBA) designed to enhance the whiteness and brightness of various substrates. Its core value lies in its ability to absorb ultraviolet light and re-emit it as visible blue light, effectively counteracting yellowing and creating a brilliant, clean appearance. This product is essential for manufacturers in the plastics, synthetic fibers, coatings, and detergent industries seeking to improve the aesthetic appeal and perceived quality of their finished goods.

Application

• Plastics & Polymers: Widely used as a whitening agent for thermoplastics like PVC, polyethylene (PE), polypropylene (PP), and polystyrene (PS), especially in injection molding and extrusion applications.
• Synthetic Fibers: Effective for brightening polyester, nylon, and acetate fibers during the spinning process or in subsequent finishing baths.
• Detergents & Laundry Care: A key ingredient in laundry detergents, fabric softeners, and soaps to impart a "whiter-than-white" effect on textiles.
• Coatings & Paints: Incorporated into lacquers, paints, and printing inks to improve brightness and opacity on paper, wood, and metal surfaces.
• Paper Manufacturing: Used in the coating or mass coloration of high-quality papers to achieve superior whiteness.
• Advanced Materials: Applicable in specialty adhesives and certain cosmetic formulations where optical enhancement is required.

Basic Information

Product Name	Fluorescent Brightener 184
CAS No.	12224-40-7
Molecular Formula	C₄₀H₄₂N₁₂O₆S₄
Molecular Weight	907.11 g/mol
Synonyms	2,2'-(1,2-Ethenediyl)bis[5-[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]benzenesulfonic acid; Tinopal UNPA-GX; Blankophor BSU; Fluorescent Brightener ER-I; Leucophor BSU; 4,4'-Bis[(4-anilino-6-bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid; FB 184; Optical Brightener 184
EINECS	235-426-4

Quality Control

Our production of Fluorescent Brightener 184 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 hue, and tests for solubility and thermal stability. Certificates of Analysis (COA) documenting all key parameters are available upon request to support your quality assurance and regulatory compliance needs.

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. Under these conditions, the product maintains optimal stability.

Specification

Item	Specification
Appearance	Yellowish-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Strength (Spectrophotometry)	100 ± 3%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Solubility (in water)	Soluble, clear solution
pH (1% solution)	7.0 - 9.0

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