61968-71-6

Basic information

• Product Name: Fluorescent brightener 140
• Synonyms: Fluorescent brightening agent 140;OPTICAL BRIGHTENER 140
• CAS NO: 61968-71-6
• Molecular Formula: C14H17NO2
• Molecular Weight: 231.29028
• EINECS: 202-068-9
• Mol File: 61968-71-6.mol
• Article Data: 10

Chemical Properties

• Boiling Point: 391.7°C at 760 mmHg
• Flash Point: 152°C
• Appearance: /
• Density: 1.122g/cm³
• Vapor Pressure: 2.43E-06mmHg at 25°C
• Refractive Index: 1.574
• CAS DataBase Reference: Fluorescent brightener 140(CAS DataBase Reference)
• NIST Chemistry Reference: Fluorescent brightener 140(61968-71-6)
• EPA Substance Registry System: Fluorescent brightener 140(61968-71-6)

Safety Data

• Hazardous Substances Data: 61968-71-6(Hazardous Substances Data)

Usage

General Description

Fluorescent brightener 140, also known as C.I. 45174, is a chemical compound commonly used in laundry detergents, paper, and plastic industries. It is a fluorescent dye that absorbs UV light and emits visible blue light, making fabrics appear brighter and whites appear whiter. It works by binding to the fabric and reflecting light in a way that enhances the appearance of the material. However, there have been concerns about its environmental impact and potential health hazards, as it may persist in the environment and cause allergic reactions in some individuals. Therefore, its use is regulated in some countries and industries to minimize its potential negative effects.

InChI:InChI=1/C14H17NO2/c1-4-15(5-2)11-6-7-12-10(3)8-14(16)17-13(12)9-11/h6-9H,4-5H2,1-3H3

Upstream product

• 288-32-4 1H-imidazole 
• 107995-74-4 7-(diethylamino)-3-iodo-4-methyl-2H-chromen-2-one 
• 51-17-2 benzoimidazole 
• 926-66-9 2-ethoxyprop-1-ene 
• 17469-23-7 (E)-ethyl 3-(phenylamino)but-2-enoate 
• 80-62-6 methacrylic acid methyl ester 
• 536-74-3 phenylacetylene 
• 13518-90-6 7-diethylamino-4-methyl-3,4-dihydrocoumarin 
• 121-46-0 bicyclo[2.2.1]hepta-2,5-diene 
• 100-43-6 4-vinylpyridine 
• 100-42-5 styrene 
• 292638-85-8 acrylic acid methyl ester 
• 95-13-6 1-indene 
• 107-13-1 acrylonitrile 

Downstream Products

• 36840-73-0 7-diethylamino-4-methyl-3-(4-nitro-phenyl)-chromen-2-one 
• 29197-96-4 3-phenyl-4-methyl-7-diethylamino-2H-benzopyran-2-one 
• 29639-42-7 3-(4-chloro-phenyl)-7-diethylamino-4-methyl-chromen-2-one 
• 29197-97-5 7-(diethylamino)-3-(4-methoxyphenyl)-4-methyl-2H-chromen-2-one 
• 63977-62-8 diethyl-methyl-(4-methyl-2-oxo-2H-chromen-7-yl)-ammonium; iodide 
• 121262-32-6 1-endo-phenyl-8b-methyl-6-diethylamino-1,2-dihydrocyclobutobenzopyran-3-one 
• 115264-76-1 4-methyl-3-(1-phenylethyl)-7-diethylaminocoumarin 
• 115264-77-2 4-methyl-3-(2-nitro-1-phenylethyl)-7-diethylaminocoumarin 
• 132163-75-8 (1R,2S,2aR,8bS)-6-Diethylamino-8b-methyl-1,2-diphenyl-1,2,2a,8b-tetrahydro-4-oxa-cyclobuta[a]naphthalen-3-one 
• 133388-55-3 (1R,2R,2aS,8bR)-6-Diethylamino-8b-methyl-2-phenyl-1-((E)-styryl)-1,2,2a,8b-tetrahydro-4-oxa-cyclobuta[a]naphthalen-3-one 
• 118967-39-8 4-Methyl-7-diethylamino-2-(5,5-dimethylcyclohexa-1,3-dione-2-ilidene)-2H-1-benzopiran 
• 88861-43-2 4-(diazomethyl)-7-(diethylamino)coumarin 
• 118116-72-6 3-nitro-4-methyl-7-diethylamino-2H-benzopyran-2-one 

Relevant articles and documents

Taking advantage of the aromatisation of 7-diethylamino-4-methyl-3,4-dihydrocoumarin in the fluorescence sensing of superoxide anion

The aromatisation of 7-diethylamino-3,4-dihydrocoumarin provides an alternative fluorescent probing technique to selectively detect the concentration of superoxide anion in solution. In addition, we reported the advantage of evaluating O2- sensing probes

Preparation method of 4-methyl-7-diethylaminocoumarin and application of preparation method

The invention belongs to the technical field of coumarin dye synthesis, and particularly relates to a preparation method of 4-methyl-7-diethylaminocoumarin and application of the preparation method. According to the technical schemes, m-hydroxy-N, N-diethylaniline and ethyl acetoacetate are subjected to a reaction, the molar ratio of the m-hydroxy-N, N-diethylaniline to the ethyl acetoacetate is 1: (1.5-2.2), part of the ethyl acetoacetate serves as a solvent, ethyl alcohol and water generated in the reaction are evaporated out while the reaction is conducted, then heat preservation is conducted for a period of time in a high-temperature section, and therefore, the yield is increased; after the reaction is finished, glacial acetic acid and water are added, stirring is performed, and cooling is performed to 0 DEG C; spin-drying is performed, so that a crude product is obtained; and refining is performed with methanol, so that the finished product 4-methyl-7-diethylaminocoumarin is obtained. According to the 4-methyl-7-diethylaminocoumarin prepared by the method, the content of the 4-methyl-7-diethylaminocoumarin can reach 99.5%, the yield of the 4-methyl-7-diethylaminocoumarin is ashigh as 95%, the quality of the product is high; and the defects of low purity and low yield of a traditional preparation method can be overcome. The preparation method is simple. With the preparation method adopted, industrial production is easy to carry out.

Permethylated NHC-Capped α- and β-Cyclodextrins (ICyDMe) Regioselective and Enantioselective Gold-Catalysis in Pure Water

A series of water-soluble encapsulated copper(I), silver(I) or gold(I) complexes based on NHC-capped permethylated cyclodextrins (ICyDMe) were developed and used as catalysts in pure water for hydration, lactonization, hydroarylation and cycloisomerization reactions. ICyDMe ligands gave cavity-based high regioselectivity in hydroarylations, and high enantioselectivities in gold-catalyzed cycloisomerizations reactions giving up to 98 % ee in water. These ICyDMe are therefore useful ligands for selective catalysis in pure water.