12224-40-7

Basic information

• Product Name: Fluorescent Brightener 184
• Synonyms: bis-Benzoxazolyl derivative;C.I. Fluorescent brightener 184;C.I. Fluorescent brightening agent 184;Fluorescent brightening agent 184;Fluorescent Brightener OB C.I. 184;2,2'-(2,5-Thienediyl)bis[5-(2-methyl-2-propanyl)-1,3-benzoxazole]
• CAS NO: 12224-40-7
• Molecular Formula: C26H26N2O2S
• Molecular Weight: 430.56184
• EINECS: 230-426-4
• Mol File: 12224-40-7.mol
• Article Data: 5

Chemical Properties

• Melting Point: 196-202℃
• Boiling Point: 531.2oC at 760 mmHg
• Flash Point: 275.1oC
• Appearance: Amber transparent liquid
• Density: 1.185 g/cm3
• Vapor Pressure: 7.83E-11mmHg at 25°C
• Refractive Index: 1.617
• CAS DataBase Reference: Fluorescent Brightener 184(CAS DataBase Reference)
• NIST Chemistry Reference: Fluorescent Brightener 184(12224-40-7)
• EPA Substance Registry System: Fluorescent Brightener 184(12224-40-7)

Safety Data

• Safety Statements: S24/25:
• Hazardous Substances Data: 12224-40-7(Hazardous Substances Data)

Usage

General Description

Fluorescent Brightener 184, also known as Distearyl biphenyl DLS, is a chemical compound frequently used as an optical brightener in various industrial and consumer applications. This fluorescent dye absorbs light in the ultraviolet spectrum and re-emits it in the visible spectrum, resulting in a brightening effect that makes colors appear more vibrant. It is commonly found in laundry detergents, paper, plastics, and textiles to enhance the whiteness and brightness of the materials. It is also used in the production of fluorescent inks, coatings, and paints for increased visual impact. Despite its widespread use, there are concerns about its potential impact on human health and the environment, leading to ongoing research and regulation efforts.

InChI:InChI=1/C26H26N2O2S/c1-25(2,3)15-7-9-19-17(13-15)27-23(29-19)21-11-12-22(31-21)24-28-18-14-16(26(4,5)6)8-10-20(18)30-24/h7-14H,1-6H3

Upstream product

• 932-95-6 2,5-thiophenedicarboxaldehyde 
• 98-29-3 4-tert-Butylcatechol 
• 4282-31-9 Thiophene-2,5-dicarboxylic acid 
• 1199-46-8 2-amino-4-tert-butylphenol 
• 3857-36-1 thiophene-2,5-dicarbonyl dichloride 

Relevant articles and documents

Metal-Free Oxidative Condensation of Catechols, Aldehydes and NH4OAc towards Benzoxazoles

Benzoxazoles extensively exist in biologically active compounds, natural products, pharmaceuticals and functional materials. Thus, facile and green synthesis of such valuable compounds from easily available substrates will make a contribution to drug, material, and fine chemistry. A method for the synthesis of benzoxazoles from catechols, aldehydes and ammonium acetate is developed using NaIO4 as oxidant under metal- and additive-free conditions. A broad range of benzoxazoles including some fluorescent whitening agents, JTP-426467 and tafamidis analogues are synthesized in 56–95% yields with outstanding functional group tolerance. Mechanistic investigations suggest that an interesting o-iminocyclohexa-diene alcohol intermediate is involved in the reaction. These salient features of the protocol make it an alternative for the synthesis of benzoxazoles. (Figure presented.).

Process for preparing particles which have a hydrophilic core coated with a hydrophobic polymeric layer

This method of preparing particles having a hydrophilic core coated with a hydrophilic core coated with a hydrophobic polymeric layer includes the steps of: preparing an aqueous phase comprising at least one hydrophilic optical brightener or colorant; preparing an organic phase including at least one hydrophobic polymer; forming a water-in-oil inverse emulsion by adding the aqueous phase into the organic phase; forming the particles by thermal quenching of the emulsion; and isolating the particles thus obtained.

Eine einfache Methode zur Herstellung von Benzoxazolen

The preparation of benzoxazoles by a facile one-pot reaction is reported.The reaction of carboxylic acids with 2-chloro-N-methyl-Δ1-pyrrolinium chloride in an excess of N-methyl-2-pyrrolidone afforded carboxylic acid chlorides which were converted subsequently to their 2-hydroxyanilides by addition of 2-aminophenols.Cyclization of the 2-hydroxy-anilides at elevated temperatures furnished the benzoxazoles in high yield and purity.