82799-44-8

Basic information

• Product Name: 2,4-Diethyl-9H-thioxanthen-9-one
• Synonyms: 2,4-DIETHYLTHIOXANTHEN-9-ONE;2,4-DIETHYLTHIOXANTHONE;2,4-DIETHYL-9H-THIOXANTHEN-9-ONE;DETX;SYNCURE DETX;Diethylthioxanthenone;2,4-DIETHYL-9H-THIOXANTHEN-9-ONE [DETX];2,4-Diethylthioxanthenone
• CAS NO: 82799-44-8
• Molecular Formula: C₁₇H₁₆OS
• Molecular Weight: 268.37
• EINECS: 280-041-0
• Product Categories: Functional Materials;Photopolymerization Initiators;Organic Photoinitiators;Polymerization Initiators;Thioxanthones
• Mol File: 82799-44-8.mol
• Article Data: 12

Chemical Properties

• Melting Point: 66-70 °C(lit.)
• Boiling Point: 427.9 ºC at 760 mmHg
• Flash Point: 237.3 ºC
• Appearance: pale yellow powder
• Density: 1.178 g/cm³
• Vapor Pressure: 1.58E-07mmHg at 25°C
• Refractive Index: 1.631
• Storage Temp.: under inert gas (nitrogen or Argon) at 2–8 °C
• Water Solubility: 8μg/L at 25℃
• CAS DataBase Reference: 2,4-Diethyl-9H-thioxanthen-9-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-Diethyl-9H-thioxanthen-9-one(82799-44-8)
• EPA Substance Registry System: 2,4-Diethyl-9H-thioxanthen-9-one(82799-44-8)

Safety Data

• Safety Statements: 24/25
• WGK Germany: 3
• Hazardous Substances Data: 82799-44-8(Hazardous Substances Data)

Usage

Uses

Different sources of media describe the Uses of 82799-44-8 differently. You can refer to the following data:
1. 2,4-Diethyl-9H-thioxanthen-9-one is an important organic intermediate to synthetize substituted thioxanthen products.
2. Photoinitiator

Chemical Properties

Yellow to yellow-green solid

Flammability and Explosibility

Notclassified

InChI:InChI=1/C17H16OS/c1-3-11-9-12(4-2)17-14(10-11)16(18)13-7-5-6-8-15(13)19-17/h5-10H,3-4H2,1-2H3

Upstream product

• 141-93-5 m-diethylbenzene 
• 527-89-9 dithiosalicylic acid 
• 119-80-2 2,2'-dithiobenzoic acid 
• 98-07-7 Benzotrichlorid 

Relevant articles and documents

Preparation method of thioxanthone photoinitiator

The invention relates to a preparation method of a thioxanthone photoinitiator, particularly relates to a preparation method of 2,4-diethyl thioxanthone and isopropyl thioxanthone, and is characterized in that the 2,4-diethyl thioxanthone and isopropyl thioxanthone are prepared by taking dithiosalicylic acid as a raw material and adopting a combined catalyst, and the 2,4-diethyl thioxanthone and isopropyl thioxanthone are both thioxanthone photoinitiators. According to the method, the catalyst can be recycled and reused, and meanwhile, the defects that a large amount of sulfuric acid is used and a large amount of sulfonation byproducts are generated in the reaction in the traditional process are avoided. According to the method, the raw materials are cheap and easy to obtain, the yield is high, the catalyst can be recycled and continuously used, and the preparation method is cheap, environmentally friendly, easy to operate and suitable for industrialization.

One-pot synthesis technology of photo initiator 2,4-diethylthioxanthone

The invention discloses a one-pot synthesis technology of a photo initiator 2,4-diethylthioxanthone. The invention belongs to the field of fine chemical engineering, and specifically relates to a one-pot synthesis technology of a photo initiator 2,4-diethylthioxanthone. According to the technology, thiosalicylic acid (or dithiosalicylic acid) and 1,3-diethylbenzene are taken as the raw materials,concentrated sulfuric acid is taken as a catalyst and a solvent, and under the action of a co-catalyst, condensation reactions are carried out for 4 to 8 hours at a temperature of 0-70 DEG C. Post treatment technologies (condensation, extraction, concentration, and recrystallization) are carried out in one reaction unit; the obtained product is filtered and dried to obtain high purity 2,4-diethylthioxanthone. The technology has the advantages of good selectivity, low reaction temperature, short reaction time, high yield, simple and convenient operation, and high efficiency of single kettle, the equipment investment, the energy consumption, the operation strength, and the production cost are reduced, and the technology is suitable for industrial production.

Visible-Light-Induced Aerobic Oxidation of Benzylic C(sp 3)-H of Alkylarenes Promoted by DDQ, tert -Butyl Nitrite, and Acetic Acid

A visible-light photocatalytic aerobic oxidation of benzylic C(sp 3)-H bonds proceeded in the presence of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, tert -butyl nitrite, and acetic acid. Advantages of this aerobic oxidation method include its relatively mild conditions, the use of visible-light irradiation instead of conventional thermal methods, the use of a low catalyst loading, and the ability to oxidize a range of alkylarenes, including xanthenes, thioxanthenes, and 9,10-dihydroacridines, to the corresponding ketones in excellent yields.