Description

Hexasodium 2-[[4-(bis(2-hydroxyethyl)amino)-6-[[4-[(E)-2-[4-[[4-(bis(2-hydroxyethyl)amino)-6-[(2,5-disulfonatophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfonato-phenyl]ethenyl]-3-sulfonato-phenyl]amino]-1,3,5-triazin-2-yl]amino]benzene-1,4-disulfonate is a highly functionalized, water-soluble fluorescent brightening agent belonging to the triazinylaminostilbene disulfonate class. This compound is engineered to absorb ultraviolet light and re-emit it as visible blue light, providing a powerful whitening and brightening effect on various substrates. It is a critical material for manufacturers in the textile, paper, detergent, and plastics industries seeking to enhance the visual appeal and perceived cleanliness of their products.

Application

• Textile Finishing: As a key optical brightening agent (OBA) or fluorescent whitening agent (FWA) for cotton, nylon, and other synthetic fibers to achieve high whiteness and brightness.
• Laundry Detergent Formulation: Incorporated into premium liquid and powder detergents to compensate for fabric yellowing and deliver a "whiter-than-white" appearance on washed garments.
• Paper Manufacturing: Used in the coating and sizing of high-quality writing, printing, and tissue papers to improve brightness and opacity, reducing the need for costly blue dyes.
• Plastics and Polymer Processing: Applied in the production of whitened plastics, such as PVC, polyolefins, and styrenics, for applications requiring high visual purity and aesthetic quality.
• Soap and Personal Care Products: Added to soaps and certain cosmetic formulations to enhance their visual brightness and purity.
• Synthetic Fiber Production: Used during the polymerization or spinning process of fibers like polyester and polyamide to impart inherent whiteness.

Basic Information

Product Name	Hexasodium 2-[[4-(bis(2-hydroxyethyl)amino)-6-[[4-[(E)-2-[4-[[4-(bis(2-hydroxyethyl)amino)-6-[(2,5-disulfonatophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfonato-phenyl]ethenyl]-3-sulfonato-phenyl]amino]-1,3,5-triazin-2-yl]amino]benzene-1,4-disulfonate
CAS No.	76482-78-5
Molecular Formula	C₄₆H₄₂N₁₂Na₆O₂₄S₆
Molecular Weight	~1551.2 g/mol (Disodium salt form). Contact for exact weight of hexasodium salt.
Synonyms	Fluorescent Brightener 220; FWA 220; Tinopal CBS-X; Blankophor BBH; Hexasodium 4,4'-bis[[4-[bis(2-hydroxyethyl)amino]-6-[(2,5-disulfophenyl)amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonate; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-[(2,5-disulfophenyl)amino]-1,3,5-triazin-2-yl]amino]benzenesulfonic acid] hexasodium salt; Optical Brightener OB-1 (specific grade); Stilbene triazine fluorescent brightener.
EINECS	Contact for details.

Quality Control

Our production of Fluorescent Brightener 220 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. The product is manufactured under a quality system and undergoes comprehensive testing, including spectrophotometric analysis for strength and shade, purity assessment by HPLC, and checks for solubility and ionic content. A Certificate of Analysis (COA) detailing specific results for each batch is provided to guarantee it meets the required specifications for your application.

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). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect flow properties and performance.

Specification

Item	Specification
Appearance	Yellowish-green powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Ash Content (Sulfated)	Contact for details
pH (1% Solution)	7.0 - 9.5
Whiteness/Brightness Value	Contact for details
Solubility in Water	Freely soluble

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