Description

Fluorescent Brightener 90-1 is a high-performance stilbene-based optical brightening agent (OBA) designed to enhance the whiteness and brightness of various substrates. This compound is critical for manufacturers seeking to achieve superior visual appeal and perceived cleanliness in their finished products. It is primarily utilized by industries involved in the production of detergents, paper, textiles, and plastics where brilliant whiteness is a key quality parameter.

Application

• Laundry Detergents & Fabric Softeners: Incorporated into powder and liquid formulations to impart a brilliant white and bright appearance to laundered textiles, counteracting yellowing.
• Paper & Pulp Manufacturing: Used as a brightening agent in high-quality writing, printing, and packaging papers to achieve a high degree of whiteness and opacity.
• Textile & Fiber Treatment: Applied in the finishing process for synthetic fibers (like polyester and nylon) and cotton blends to enhance brightness and create optical whitening effects.
• Plastics & Polymer Masterbatches: Added to polymers such as PVC, polyethylene, and polystyrene to correct inherent yellowness and improve the visual quality of molded or extruded articles.
• Soaps & Personal Care Products: Utilized in certain soap bars and cosmetic formulations where a bright, clean visual profile is desired.
• Coatings & Inks: Employed in specialty coatings and printing inks to increase luminosity and achieve specific brightening effects on surfaces.

Basic Information

Product Name	Fluorescent Brightener 90-1
CAS No.	120797-63-9
Molecular Formula	C₄₀H₄₂N₁₂O₆S₂
Molecular Weight	843.0 g/mol
Synonyms	Fluorescent Brightener OB-1; 2,2'-(1,2-Ethenediyl)bis[5-[4-(4-morpholinyl)-6-(phenylamino)-1,3,5-triazin-2-yl]amino]benzenesulfonic acid disodium salt; Tinopal OB; Blankophor OB; OB-1 Brightener; 4,4'-Bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulfonic acid disodium salt; Optical Brightener OB
EINECS	Contact for details

Quality Control

Our Fluorescent Brightener 90-1 is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and strength, spectrophotometry for color shade and brightness evaluation, and tests for solubility and residue. We ensure consistency and compliance with industry specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment.

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. The product is light-sensitive and should be stored away from direct light exposure to maintain stability and performance.

Specification

Item	Specification
Appearance	Yellowish-green powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Brightness (457nm)	≥ 120% (vs. standard)
Moisture Content	≤ 2.0%
Ash Content	≤ 0.5%
Solubility (in water)	Clear, faint yellow solution
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.