4659-48-7

Basic information

• Product Name: 3,3',4,4'-TETRAMETHYL BENZOPHENONE
• Synonyms: 1-(3,4-Dimethylbenzoyl)-3,4-dimethylbenzene;Bis(3,4-dimethylphenyl)methanone
• CAS NO: 4659-48-7
• Molecular Formula: C₁₇H₁₈O
• Molecular Weight: 238.3242
• Mol File: 4659-48-7.mol
• Article Data: 6

Chemical Properties

• Melting Point: 140 °C
• Boiling Point: 387.6 °C at 760 mmHg
• Flash Point: 168.6 °C
• Appearance: /
• Density: 1.024 g/cm³
• Vapor Pressure: 3.25E-06mmHg at 25°C
• Refractive Index: 1.561
• CAS DataBase Reference: 3,3',4,4'-TETRAMETHYL BENZOPHENONE(CAS DataBase Reference)
• NIST Chemistry Reference: 3,3',4,4'-TETRAMETHYL BENZOPHENONE(4659-48-7)
• EPA Substance Registry System: 3,3',4,4'-TETRAMETHYL BENZOPHENONE(4659-48-7)

Safety Data

• Hazardous Substances Data: 4659-48-7(Hazardous Substances Data)

Usage

General Description

3,3',4,4'-Tetramethyl Benzophenone is a chemical compound primarily used as a photoinitiator in the processing of printing inks and varnishes. It is known for its photostability, and upon exposure to ultraviolet light, it generates radicals that contribute to the curing of polymers and resins. 3,3',4,4'-Tetramethyl Benzophenone is characterized by its two benzene rings fused together with four methyl groups attached, and its formula is C16H16O. Due to its uses, it is commonly found in industrial settings and is handled with care to prevent exposure and potential health hazards.

InChI:InChI=1/C17H18O/c1-11-5-7-15(9-13(11)3)17(18)16-8-6-12(2)14(4)10-16/h5-10H,1-4H3

Upstream product

• 6578-78-5 1,1-bis(3,4-dimethylphenyl)ethylene 
• 31599-61-8 3,4-dimethyliodobenzene 
• 13939-06-5 molybdenum hexacarbonyl 
• 56-23-5 tetrachloromethane 
• 95-47-6 o-xylene 
• 32315-10-9 bis(trichloromethyl) carbonate 
• 20809-71-6 Methyl-2,2-bis-<3,4-dimethyl-phenyl>-3-oxo-succinat 
• 21900-23-2 3,4-dimethylbenzoyl chloride 
• 6460-66-8 2,2-bis(3,4-dimethylphenyl)acetic acid 
• 5973-71-7 3,4-dimethylbenzaldehyde 
• 583-71-1 4-bromo-o-xylene 

Downstream Products

• 101583-78-2 3,4,3',4'-tetramethyl-benzophenone oxime 
• 1200132-82-6 3,3',4'-trimethylbenzophenone-4-carboxylic acid 
• 4659-50-1 3-methylbenzophenone-3',4,4'-tricarboxylic acid 
• 2479-49-4 3,3',4,4'-benzophenonetetracarboxylic acid 

Relevant articles and documents

Solution-Processable n-Type Organic Semiconductors Based on Angular-Shaped 2-(12 H -Dibenzofluoren-12-ylidene)malononitrilediimide

The angular-shaped n-type semiconductors 2-(12H-dibenzofluoren-12-ylidene)malononitrilediimide 2a and 2b were successfully designed, synthesized, and fully characterized by optical absorption and fluorescence, cyclic voltammetry, X-ray crystal structure a

One-pot synthesis preparation of 3,3 the [...], 4,4 the benzophenone-tetraalkyl [...] method of

The invention discloses a method for preparing 3,3',4,4'-tetraalkyl benzophenone by a one-pot method and belongs to the field of chemical synthesis. The method comprises the steps of mixing o-dialkylphenyl, which serves as a raw material, and Lewis acid and concentrated sulfuric acid, which serve as catalysts, so as to form a mixed liquid, dropwise adding carbon tetrachloride into the mixed liquid, and carrying out heat preservation for 0.5-5 hours at the temperature of 0-30 DEG C after the dropwise adding is completed. Compared with the prior art, the method disclosed by the invention has the advantages that a two-step synthesis method is simplified into the one-pot method, so that the process is simplified, the operation is simpler and more convenient, the product can be obtained by one-step aftertreatment only, and the productivity is increased. Furthermore, the method has low requirements on temperature, the whole process does not need heating or cooling, no special requirements on equipment exist, and the operation is safe, simple and convenient.

A 3,3 the [...], 4,4 the method for preparing [...] -benzophenone tetracidic dianhydride

The invention discloses a method for synthesizing 3,3',4,4'-benzophenonetetracarboxylic dianhydride by taking o-xylene and bis(trichloromethyl) carbonate as raw materials. The method comprises the steps of: by taking o-xylene and bis(trichloromethyl) carbonate as the raw materials, performing acylation reaction in catalysis of anhydrous lewis acid, thus obtaining bis(3,4-ditolyl)methanone; fully oxidizing bis(3,4-ditolyl)methanone in a potassium permanganate/hydrochloric acid system, and carrying out filtration, concentration, crystallization and the like to obtain 3,3',4,4'-benzophenonetetracarboxylic acid; performing vacuum high-temperature melting and dehydration to 3,3',4,4'-benzophenonetetracarboxylic acid to obtain the 3,3',4,4'-benzophenonetetracarboxylic dianhydride product. The preparation method has the advantages of being simple in technology, high in yield, fewer in three wastes, capable of recycling anhydrous lewis acid, low in production cost and easy for industrial implementation, and the like.