Description

Tetrasodium 4,4'-Bis[[4-Morpholino-6-[(3-Sulphonatophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonate is a high-performance, water-soluble fluorescent whitening agent (FWA) belonging to the triazinylaminostilbene class. It is valued for its exceptional ability 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 in the textile, paper, detergent, and plastics industries seeking to achieve superior optical brightening effects. Its tetrasodium salt structure ensures excellent solubility and compatibility in aqueous formulations.

Application

• Textile Finishing: Primary use as a brightener for cotton, viscose, nylon, and wool fibers during washing, bleaching, or finishing processes.
• Laundry Detergents & Fabric Softeners: Key ingredient in household and industrial detergents to make white fabrics appear brighter and counteract yellowing.
• Paper Manufacturing: Applied in coating formulations and pulp to improve the whiteness and optical quality of high-grade printing and writing papers.
• Synthetic Fibers & Plastics: Incorporated into polymers like polyamide (nylon) and polyester during synthesis or masterbatch production to impart inherent brightness.
• Soaps & Personal Care: Used in certain soap bars and cosmetic formulations where a whitening effect is desired.
• Advanced Material Coatings: Potential applications in specialty coatings and films requiring fluorescence or optical modulation.

Basic Information

Product Name	Tetrasodium 4,4'-Bis[[4-Morpholino-6-[(3-Sulphonatophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonate
CAS No.	42355-81-7
Molecular Formula	C52H48N14Na4O16S4
Molecular Weight	1369.2 g/mol (approx.)
Synonyms	Fluorescent Brightener 220; Tinopal CBS-X; Stilbene triazine fluorescent whitening agent; 4,4'-Bis[(4-morpholino-6-anilino-s-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid tetrasodium salt; FWA 220; Optical Brightener OB-1; Blankophor BSU; Leucophor BSB
EINECS	Contact for details

Quality Control

Our production of Tetrasodium 4,4'-Bis[[4-Morpholino-6-[(3-Sulphonatophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonate adheres to stringent quality management systems. Every batch undergoes rigorous testing to ensure consistent performance in key parameters such as strength, hue, solubility, and purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing specifications and test results. Our quality commitment ensures reliability for your critical industrial applications.

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). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellowish to off-white powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
pH (1% Solution)	7.0 - 10.0
Ash Content (Sulfated)	Contact for details
Fluorescence Intensity	Compared to standard
Solubility in Water	Clear solution

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