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

Synonym(s):(2,4,6-Trimethylbenzoyl)diphenylphosphine oxide;(Diphenylphosphoryl)(mesityl)methanone;2,4,6-Trimethylbenzoylphenyl phosphinate

CAS NO.：75980-60-8
Empirical Formula: C22H21O2P
Molecular Weight: 348.37
MDL number: MFCD00192110
EINECS: 278-355-8
SAFETY DATA SHEET (SDS)
Update Date: 2024-11-13 11:39:26

Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide Structural

What is Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide?

Chemical properties

white or cream powder

The Uses of Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide

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

The Uses of Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide

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.

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

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

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.
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 for Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H317:Sensitisation, Skin H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P202:Do not handle until all safety precautions have been read and understood. P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P308+P313:IF exposed or concerned: Get medical advice/attention.