Description

Fluorescent Brightener 185 is a high-performance stilbene derivative optical brightening agent (OBA) designed to enhance the whiteness and brightness of synthetic materials. Its core value lies in its exceptional ability to absorb ultraviolet light and re-emit it as visible blue light, effectively counteracting yellowing and creating a brilliant, clean appearance. This product is essential for manufacturers in the plastics, synthetic fibers, and coatings industries seeking to improve the aesthetic appeal and perceived quality of their finished goods.

Application

• Primary whitening agent for a wide range of thermoplastics, including PVC, polyolefins (PP, PE), and engineering plastics.
• Brightening of synthetic fibers such as polyester, nylon, and acrylics during spin finish application or mass pigmentation.
• Enhancing the whiteness of coatings, inks, and paints, particularly for industrial and decorative applications.
• Used in the production of masterbatches and concentrates for consistent and efficient downstream processing.
• Application in detergents and laundry care formulations to impart a whitening effect on fabrics (subject to specific regulatory approvals).
• Brightening agent for adhesives, sealants, and synthetic leather to achieve a premium visual finish.

Basic Information

Product Name	Fluorescent Brightener 185
CAS No.	12224-41-8
Molecular Formula	C₄₀H₄₂N₁₂O₆S₂
Molecular Weight	843.0 g/mol
Synonyms	2,2'-(1,2-Ethenediyl)bis[5-[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]benzenesulfonic acid; Fluorescent Brightener ER-I; Tinopal ER; Blankophor ER; Hakkol BR; 4,4'-Bis[(4-anilino-6-bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid; CBS 185; FBA 185
EINECS	Contact for details

Quality Control

Our Fluorescent Brightener 185 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent performance, including assay (HPLC), shade evaluation, and solubility tests. We provide full traceability and Certificates of Analysis (COA) are available upon request to support your quality assurance and regulatory compliance needs.

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). Keep away from heat sources and incompatible materials. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Yellowish-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Ash Content	≤ 0.5%
Moisture Content (KF)	≤ 5.0%
pH (1% Solution)	7.0 - 9.0
Whiteness Degree	Standard sample comparison

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