Description

Sodium 4,4'-Bis[[6-Anilino-4-Methoxy-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonate CAS NO 85154-00-3 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 materials. This compound is critically needed in industries where superior optical brightening is required, such as in the production of high-quality papers, textiles, detergents, and plastics.

Application

• Paper Manufacturing: As a key optical brightening agent (OBA) in high-grade printing, writing, and specialty papers to achieve brilliant whiteness.
• Textile and Fiber Industry: For whitening and brightening cotton, nylon, and other synthetic fibers during finishing processes.
• Detergent and Laundry Care Formulations: Incorporated into premium laundry detergents and fabric conditioners to impart a "whiter-than-white" appearance to fabrics.
• Plastics and Polymer Processing: Used to correct yellowness and enhance the brightness of polymers, including polyvinyl chloride (PVC) and polyolefins.
• Coating and Ink Formulations: To improve the optical properties and visual appeal of coatings, varnishes, and inks.
• Soap and Personal Care Products: As a brightener in certain cosmetic and soap formulations where a whitening effect is desired.

Basic Information

Product Name	Sodium 4,4'-Bis[[6-Anilino-4-Methoxy-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonate
CAS No.	85154-00-3
Molecular Formula	C40H32N12Na2O10S2
Molecular Weight	942.86 g/mol
Synonyms	Fluorescent Brightener 220; Tinopal CBS-X; Blankophor BSU; 4,4'-Bis[(4-anilino-6-methoxy-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid disodium salt; Stilbene triazine fluorescent whitening agent; FWA 220; Optical Brightener OB-1; Disodium 4,4'-bis[(4-anilino-6-methoxy-s-triazin-2-yl)amino]stilbene-2,2'-disulfonate
EINECS	Contact for details

Quality Control

Our Sodium 4,4'-Bis[[6-Anilino-4-Methoxy-1,3,5-Triazin-2-Yl]Amino]Stilbene-2,2'-Disulphonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, performance, and compliance with industry specifications. A detailed Certificate of Analysis (COA) documenting key parameters such as assay, absorbance, and hue is provided with each shipment to guarantee product integrity and traceability.

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.

Specification

Item	Specification
Appearance	Light yellow to yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Absorbance (in water)	Conforms to typical range
Fluorescence Intensity	Conforms to typical range
Solubility (in water)	Freely soluble
pH (1% solution)	7.0 - 9.0

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