Description

Disodium Hydrogen -4,4'-Bis[[4-Morpholino-6-[(4-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. Its primary value lies in its exceptional ability to absorb ultraviolet light and re-emit it as a bright blue fluorescence, effectively compensating for yellowish tints and enhancing the perceived whiteness and brightness of materials. This compound is critically needed by manufacturers in the detergent, paper, textile, and plastics industries seeking to achieve superior optical brightening effects in their final products.

Application

• Detergent & Laundry Care Formulations: As a key optical brightener in laundry detergents, fabric softeners, and soaps to make white fabrics appear brighter and colors more vivid.
• Paper Manufacturing & Coating: Used in the production of high-quality writing, printing, and packaging papers to achieve a high degree of whiteness and opacity.
• Textile Finishing: Applied in the finishing process of cotton, nylon, and other fibers to enhance whiteness, especially after bleaching.
• Plastics and Synthetic Fibers: Incorporated into polymers like polyamide (nylon) and polyester during synthesis or masterbatch production to impart a permanent brightening effect.
• Personal Care Products: Utilized in certain cosmetics and personal care items where a whitening or brightening visual effect is desired.

Basic Information

Product Name	Disodium Hydrogen -4,4'-Bis[[4-Morpholino-6-[(4-Sulphonatophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonate
CAS No.	26358-35-0
Molecular Formula	C52H48N14Na2O16S4
Molecular Weight	~1275.3 g/mol
Synonyms	Fluorescent Brightener 351; Tinopal CBS-X; Disodium 4,4'-bis[[4-morpholino-6-[(4-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate; 4,4'-Bis[[4-morpholino-6-[(4-sulfonatophenyl)amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonic acid disodium salt; FWA 351; Optical Brightener CBS-X; CI Fluorescent Brightener 351
EINECS	247-666-1

Quality Control

Our production of Disodium Hydrogen -4,4'-Bis[[4-Morpholino-6-[(4-Sulphonatophenyl)Amino]-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure consistent purity, color strength, and performance characteristics. Certificates of Analysis (COA) detailing key specifications such as assay, hue, and solubility are provided to guarantee product integrity and support your quality assurance processes.

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); therefore, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Yellowish to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	98 - 102% (vs. Standard)
Moisture (KF Titration)	≤ 5.0%
Water Solubility	Clear solution at 1%
pH (1% Solution)	7.0 - 9.0
Ash Content	≤ 0.5%

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