Description

Hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-[(3-amino-3-oxopropyl)(2-hydroxyethyl)amino]-1,3,5-triazine-4,2-diyl]imino]]bis(benzene-1,4-disulphonate) is a high-purity, water-soluble fluorescent whitening agent (FWA) belonging to the triazine-stilbene chemical class. This compound is engineered to provide exceptional optical brightening effects on various substrates by absorbing ultraviolet light and re-emitting it as visible blue light. It is a critical component for manufacturers in the textile, paper, detergent, and plastics industries seeking to enhance the perceived whiteness and brightness of their products. Its multi-sulfonated structure ensures excellent solubility and affinity in aqueous systems.

Application

• Textile Whitening: Primary application for whitening and brightening cotton, nylon, wool, and synthetic fibers during manufacturing or finishing processes.
• Laundry Detergent Formulation: A key optical brightener in premium powder and liquid detergents to make laundered clothes appear cleaner and brighter.
• Paper and Pulp Industry: Used in the production of high-quality white papers, including writing, printing, and tissue grades, to achieve a high degree of whiteness.
• Plastics and Polymers: Incorporated into polymers like PVC, polyethylene, and polypropylene to counteract yellowing and improve the visual appeal of finished plastic products.
• Soap and Personal Care: Employed in certain soap bars and cosmetic formulations where a whitening effect is desired.
• Coatings and Paints: Used in specific coating formulations to enhance brightness and opacity.

Basic Information

Item	Details
Product Name	Hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-[(3-amino-3-oxopropyl)(2-hydroxyethyl)amino]-1,3,5-triazine-4,2-diyl]imino]]bis(benzene-1,4-disulphonate)
CAS No.	67906-33-6
Molecular Formula	C46H42N12Na6O22S6
Molecular Weight	~1551.2 g/mol
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Hexasodium 4,4'-bis[[4-anilino-6-[N-2-hydroxyethyl-N-(2-carbamoylethyl)amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate; Stilbene triazine fluorescent whitening agent; Optical Brightener OB-1 (industry-specific); 4,4'-Bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid hexasodium salt (related structure); CBS-X
EINECS	Contact for details

Quality Control

Our production of hexasodium 2,2'-[vinylenebis[(3-sulphonato-4,1-phenylene)imino[6-[(3-amino-3-oxopropyl)(2-hydroxyethyl)amino]-1,3,5-triazine-4,2-diyl]imino]]bis(benzene-1,4-disulphonate) adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and isomer distribution, spectrophotometry for strength and shade, and rigorous checks for heavy metals and residual solvents. We provide full traceability and Certificates of Analysis (COA) are supplied with each shipment to ensure compliance with your specific application requirements and global regulatory standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Light yellow to yellowish-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
pH (1% Solution)	7.0 - 9.0
Water Solubility	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm
Fluorescent Strength	100 ± 5% (vs. Standard)
Ash Content	Contact for details

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