Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide Chemical Properties

Melting point:

88-92 °C(lit.)

Boiling point:

519.6±60.0 °C(Predicted)

Density 

1.12 g/mL at 25 °C(lit.)

vapor pressure 

0Pa at 25℃

refractive index 

n20/D 1.475(lit.)

Flash point:

>230 °F

storage temp. 

Sealed in dry,Room Temperature

solubility 

soluble in Methanol

form 

powder to crystal

color 

Light yellow to Yellow to Green

Water Solubility 

3.4mg/L at 20℃

λmax

400nm(DMF)(lit.)

Stability:

Stable. Incompatible with strong oxidizing agents.

InChIKey

VFHVQBAGLAREND-UHFFFAOYSA-N

LogP

3.1 at 23℃

CAS DataBase Reference

75980-60-8(CAS DataBase Reference)

EPA Substance Registry System

Phosphine oxide, diphenyl(2,4,6-trimethylbenzoyl)- (75980-60-8)

Safety Information

Hazard Codes 

Xn,N

Risk Statements 

22-62-51/53

Safety Statements 

22-24/25-61-36/37

RIDADR 

UN 3077 9 / PGIII

WGK Germany 

2

RTECS 

SZ0395000

HazardClass 

9

PackingGroup 

III

HS Code 

29319090

MSDS

• Language:English Provider:SigmaAldrich

Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide Usage And Synthesis

Chemical Properties

white or cream powder

Uses

TPO can be used in the photo-crosslinking of PMMA composite, which can further be used as a gate insulator in organic thin film transistors (OTFTs). It can also be used in the formation of UV curable urethane-acrylate coatings. It may also be used in the photoinduced reaction for the formation of organophosphine compounds, which potentially find their usage as ligands with metal catalysts and reagents.

Uses

Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide is a photo initiator, used in many kinds of ink industries

General Description

Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) is a monoacylphosphine oxide based photoinitiator that can be incorporated in a variety of polymeric matrixes for efficient curing and color stability of the resin.

Flammability and Explosibility

Non flammable

Synthesis

The general procedure for the synthesis of the photoinitiator TPO from 2,4,6-trimethylbenzaldehyde and diphenylphosphine oxide is as follows: 37.61 g of 2,4,6-trimethylbenzaldehyde and 56.17 g of diphenylphosphine oxide were added to a three-necked flask containing 450 ml of methylene chloride, and mixed with stirring. After 6 hours of reaction, the reaction system was cooled in a low temperature water bath to 8?10°C. Subsequently, 0.2925 g of ammonium metavanadate (NH4VO3) and 37 ml of 30% H2O2 were added and reacted at low temperature for 0.5 hours. After that, the reaction mixture was moved to room temperature conditions to continue the reaction for 5 hours. Upon completion of the reaction, 5% aqueous Na2S2O3 was added to the reaction solution to neutralize the unreacted H2O2. Next, an extraction operation was carried out and the organic layer was collected and washed three times with saturated brine. After dehydration by adding anhydrous sodium sulfate, the product was purified by recrystallization. Finally, the product was collected by filtration and dried to give a light yellow powdery solid, the TPO product, in 98% yield.

References

[1] Patent: CN106905364, 2017, A. Location in patent: Paragraph 0030; 0031; 0032; 0033; 0034

Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide(75980-60-8)Related Product Information

• Chlorodiphenylphosphine
• NITRIC OXIDE
• Magnesium oxide
• ETHYLENE OXIDE
• Triphenylphosphine oxide
• Boron oxide
• Tetramethylammonium hydroxide pentahydrate
• Iron oxide
• Benzyltrimethylammonium hydroxide
• Diphenylphosphine oxide
• Tri(o-tolyl)phosphine
• Triethyl phosphonoacetate
• Iron oxide black
• Zinc oxide
• Rutile
• (Diethoxymethyl)diphenylphosphine oxide
• Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide
• 2-Methyl-4'-(methylthio)-2-morpholinopropiophenone