Description

4,4'-Bis[[4-(2-Methoxyethoxy)-6-[Methyl(2-Sulphoethyl)Amino]-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonic Acid, Sodium Salt is a high-performance, water-soluble fluorescent whitening agent (FWA) belonging to the triazinylaminostilbene disulfonate class. Its primary value lies in its exceptional ability to absorb ultraviolet light and re-emit it as visible blue light, thereby compensating for yellowing and significantly enhancing the perceived whiteness and brightness of treated materials. This compound is essential for manufacturers in the detergent, paper, textile, and plastics industries seeking to achieve superior optical brightening effects in their products.

Application

• Laundry Detergents & Fabric Softeners: As a key optical brightener to make white fabrics appear brighter and colors more vivid after washing.
• Paper Manufacturing: For whitening high-quality writing, printing, and specialty papers to achieve a brilliant white finish.
• Textile & Fiber Treatment: Applied in the finishing process of cotton, nylon, and other fibers to enhance whiteness and brightness.
• Synthetic Polymers & Plastics: Incorporated into polymers like polyamide, polyester, and PVC to improve optical properties and mask inherent yellowness.
• Soaps & Personal Care Products: Used in certain formulations to boost the visual appeal of bar soaps and other cleansing products.
• Coatings & Paints: As an additive to improve the brightness and opacity of specific coating systems.

Basic Information

Product Name	4,4'-Bis[[4-(2-Methoxyethoxy)-6-[Methyl(2-Sulphoethyl)Amino]-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonic Acid, Sodium Salt
CAS No.	85154-05-8
Molecular Formula	C44H56N14Na2O18S4
Molecular Weight	~1251.2 g/mol
Synonyms	Fluorescent Brightener 220; Tinopal CBS-X; Stilbene-based Optical Brightener 220; 4,4'-Bis(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino-2,2'-stilbenedisulfonic acid derivative; Sodium 4,4'-bis[[4-(2-methoxyethoxy)-6-[methyl(2-sulfoethyl)amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate; FWA 220; CBS-X; Optical Brightening Agent OBA 220
EINECS	Contact for details

Quality Control

Our production of this fluorescent whitening agent adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical testing, including HPLC for assay and purity, spectrophotometry for strength and shade, and checks for solubility and ionic content. A Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to guarantee compliance with your application requirements.

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 product 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 or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Strength (Spectrophotometry)	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
pH (1% Solution)	7.0 - 9.0
Ash Content (Sulfated)	Contact for details

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