Description

Fluorescentbrightenerfwa-1 CAS NO 56776-30-8 is a high-performance stilbene-based optical brightening agent (OBA) designed to enhance the whiteness and brightness of various substrates. This compound is critical for manufacturers seeking to achieve superior visual appeal and perceived cleanliness in their finished products. It is primarily utilized by the paper, textile, detergent, and plastics industries to compensate for yellowish tints and impart a brilliant blue-white fluorescence.

Application

• Paper Manufacturing: Key additive in high-quality writing, printing, and tissue papers to achieve exceptional brightness and opacity.
• Textile Finishing: Used for whitening natural and synthetic fibers like cotton, polyester, and polyamide, improving the color vividness of dyed fabrics.
• Laundry Detergents & Fabric Softeners: Incorporated into detergent formulations to provide a "whiter-than-white" effect on laundered garments, enhancing consumer perception.
• Plastics and Polymers: Applied in the production of plastics, adhesives, and coatings to correct inherent yellowness and improve the aesthetic quality of clear or white materials.
• Soaps and Personal Care: Used in certain soap bars and cosmetic formulations where a bright, clean appearance is desired.

Basic Information

Item	Detail
Product Name	Fluorescentbrightenerfwa-1
CAS No.	56776-30-8
Molecular Formula	C40H38N12Na4O16S4
Molecular Weight	1171.1 g/mol
Synonyms	Fluorescent Brightener FWA-1; Tinopal CBS-X; 4,4'-Bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid disodium salt; 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; Blankophor BSU; Leucophor BSB; Optical Brightener 220; FWA 220
EINECS	Contact for details

Quality Control

Our Fluorescentbrightenerfwa-1 is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and spectrophotometry for strength and hue, to ensure consistent performance and compliance with industry specifications. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance, and physical properties 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 incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellowish-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 0.5%
Absorbance (in water)	Conforms to standard range
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.