84434-11-7

Basic information

• Product Name: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate
• Synonyms: 4-BENZORESORCINOL;4-BENZOYLRESORCINOL;2,4,6-trimethylbenzoylethoxyphenylphosphine oxide;2,4,6-TRIMETHYLBENZOYLPHENYLPHOSPHINIC ACID ETHYL ESTER;DIHYDROXYBENZOPHENONE(2,4-);ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate;BENZOPHENONE-1;Phenyl(2,4,6-trimethylbenzoyl)phosphinic acid ethyl ester
• CAS NO: 84434-11-7
• Molecular Formula: C₁₈H₂₁O₃P
• Molecular Weight: 316.33
• EINECS: 282-810-6
• Mol File: 84434-11-7.mol
• Article Data: 7

Chemical Properties

• Melting Point: 144.5-147 °C(lit.)
• Boiling Point: 456.023 °C at 760 mmHg
• Flash Point: 242.878 °C
• Appearance: /
• Density: 1.14
• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.549
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• Solubility: 71.8g/L in organic solvents at 20 ℃
• Water Solubility: 35mg/L at 25℃
• CAS DataBase Reference: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate(CAS DataBase Reference)
• NIST Chemistry Reference: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate(84434-11-7)
• EPA Substance Registry System: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate(84434-11-7)

Safety Data

• Hazard Codes: Xi
• Statements: 36
• Safety Statements: 26
• WGK Germany: 2
• RTECS: DJ0700000
• Hazardous Substances Data: 84434-11-7(Hazardous Substances Data)

Usage

Uses

Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate(Photoinitiator TPO-L) is a liquid photoinitiator for low yellowing, low odor formulations, commonly used in screen printing inks, lithographic printing inks, flexo printing inks, photoresists, varnishes, printing Plates and other fields.

Flammability and Explosibility

Nonflammable

InChI:InChI=1/C18H21O3P/c1-5-21-22(20,16-9-7-6-8-10-16)18(19)17-14(3)11-13(2)12-15(17)4/h6-12H,5H2,1-4H3

Upstream product

• 1779-48-2 phenylphosphinic acid 
• 487-68-3 mesytaldehyde 
• 64-67-5 diethyl sulfate 
• 172487-18-2 ethyl Phenylphosphinate 
• 33642-96-5 ethyl trimethylsilyl phenylphosphonite 
• 938-18-1 mesitylene-2-carboxylic acid chloride 
• 64-17-5 ethanol 
• 644-97-3 Dichlorophenylphosphine 
• 824-72-6 P,P-dichlorophenylphosphine oxide 
• 108-90-7 chlorobenzene 
• 1754-49-0 diethyl phenylphosphonate 
• 71-43-2 benzene 
• 1638-86-4 diethyl phenylphosphonite 
• 81759-79-7 2,2,2-trichloro-1-(2,4,6-trimethylphenyl)ethan-1-one 

Downstream Products

• 85073-12-7 sodium (2,4,6-trimethylbenzoyl)phenylphosphine oxide 
• 85073-19-4 lithium (2,4,6-trimethylbenzoyl)phenylphosphine oxide 

Relevant articles and documents

Preparation method of methyl substituted benzaldehyde

The invention relates to a preparation method of methyl substituted benzaldehyde, in particular to a method for preparing alkyl aromatic aldehyde through a carbonylation reaction by adopting methyl substituted aromatic hydrocarbon as raw materials. According to the method, ionic liquid with the high catalytic activity is adopted, and methyl substituted benzene is used for preparing the methyl substituted benzaldehyde under the alleviated condition with high conversion rate; meanwhile, the reaction time is shortened, waste water, gas and industrial residues are reduced, and no auxiliaries withhigh corrosivity are adopted.

Chlorosilane-Catalyzed Coupling of Hydrogen Phosphine Oxides with Acyl Chlorides Generating Acylphosphine Oxides

We report a new method for the synthesis of acylphosphine oxides by the direct coupling of hydrogen phosphine oxides and acyl chlorides mediated by chlorosilanes. This new protocol is greener and safer, because it precludes the generation of volatile haloalkanes and the use of oxidants employed in the conventional methods. Moreover, moisture-unstable acylphosphine oxides that are difficult to prepare via the conventional methods can be generated using this new method.

Preparation method for high-purity ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate

The invention discloses a preparation method for high-purity ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate. The preparation method comprises the following concrete steps: reacting phenylphosphinate with aromatic aldehyde so as to prepare an intermediate, subjecting the intermediate to catalytic oxidation so as to obtain benzoylphenylphosphinic acid and subjecting benzoylphenylphosphinic acid and diethyl sulfate to an ethylation reaction so as to obtain ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate. According to the invention, raw materials have high quality and stable properties; by-produced impurities produced during synthesis of ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate can be removed through neutralization, and ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate with a purity of higher than 99.0%, which meets market demands for the high-purity photoinitiator ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate.