Description

Fluorescent Brightener 204 is a high-performance stilbene-based optical brightening agent (OBA) designed to enhance the whiteness and brightness of various substrates. This compound matters for manufacturers seeking to achieve superior visual appeal and perceived cleanliness in their products, effectively compensating for natural yellowing. Industries involved in the production of synthetic fibers, plastics, detergents, and paper will find this brightener essential for creating vibrant, high-quality white materials. Its efficacy under a range of processing conditions makes it a versatile and reliable choice for industrial applications.

Application

• Primary whitening agent for polyester (PET), nylon, and acetate synthetic fibers and textiles.
• Brightening component in laundry detergents and fabric softeners for enhanced washing performance.
• Key additive in plastics and polymers, including PVC and polyolefins, to improve optical properties.
• Used in paper coating and pulp to achieve high-grade brightness in printing and writing papers.
• Incorporated into coatings and paints to provide a clean, bright white finish.
• Applied in the manufacture of advanced materials where UV stability and whiteness are critical.

Basic Information

Item	Details
Product Name	Fluorescent Brightener 204
CAS No.	76482-77-4
Molecular Formula	C40H38N12O8S2Na2
Molecular Weight	924.96 g/mol
Synonyms	Tinopal CBS-X; Blankophor P 167%; Fluorescent Brightener CBS-X; 2,2'-(1,2-Ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]benzenesulfonic acid] disodium salt; 4,4'-Bis[[4-[bis(2-hydroxyethyl)amino]-6-anilino-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulfonic acid disodium salt; Optical Brightener 204; FBA 204; OBA 204
EINECS	Contact for details

Quality Control

Our Fluorescent Brightener 204 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and spectrophotometry for strength, to ensure it meets precise performance specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment, guaranteeing traceability and consistent quality for your production processes.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Light yellow to yellowish-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 0.5%
pH (1% Solution)	7.0 - 9.0
Whiteness Degree	Standard sample ± 3%
Solubility in Water	Clear, yellow solution

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