Description

Fluorescent Yellow Aa223 is a high-performance fluorescent dye belonging to the coumarin or pyrazoline derivative family, identified by CAS No. 68427-35-0. This compound is valued for its intense, bright yellow fluorescence and excellent lightfastness, making it a critical component for applications requiring high-visibility and color stability. It is primarily sought after by manufacturers in the plastics, coatings, security printing, and textile industries for its reliable performance in demanding environments.

Application

• Plastics and Polymer Masterbatch: Used as a colorant and optical brightener for engineering plastics, PVC, polycarbonate, and synthetic fibers to achieve vibrant, long-lasting fluorescent yellow hues.
• Industrial and Safety Coatings: Incorporated into high-visibility safety paints, traffic markings, and industrial coatings where maximum detectability under various lighting conditions is required.
• Security Inks and Printing: A key ingredient in anti-counterfeiting inks for banknotes, certificates, and security documents due to its distinct fluorescent properties under UV light.
• Textile Dyeing and Printing: Applied for dyeing synthetic fabrics like polyester and nylon to produce fluorescent sportswear, safety garments, and fashion textiles.
• Detergent and Paper Brightening: Functions as an optical brightening agent (OBA) in premium laundry detergents and specialty papers to enhance whiteness and brightness.
• Laser and Optical Applications: Utilized in the formulation of dyes for tunable dye lasers and other photonic devices.

Basic Information

Product Name	Fluorescent Yellow Aa223
CAS No.	68427-35-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Solvent Yellow 160:1; C.I. 127150; Fluorescent Yellow 5G; Lumogen Yellow; Pyrazoline Yellow Aa223; 2,5-Thiophenediylbis(5-tert-butyl-1,3-benzoxazole); 2,2'-(2,5-Thiophenediyl)bis[5-(1,1-dimethylethyl)-benzoxazole]
EINECS	Contact for details

Quality Control

Our Fluorescent Yellow Aa223 is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity, spectrophotometry for color strength and shade, and tests for solubility and thermal stability to ensure consistent performance and batch-to-batch uniformity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment.

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 its stability and fluorescent properties.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow powder
Identification (IR)	Conforms to standard
Purity (HPLC)	≥ 98.0%
Color Strength	100 ± 3% (vs. Std.)
Fluorescence Intensity	Meets customer requirement
Moisture Content	≤ 0.5%
Ash Content	≤ 0.2%
Solubility	Clear solution in specified solvents

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