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Merck
CN

511447

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

97%, powder

Synonym(s):

BAPOs, Bisacylphosphine oxides

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About This Item

Linear Formula:
[(CH3)3C6H2CO]2P(O)C6H5
CAS Number:
162881-26-7
Molecular Weight:
418.46
NACRES:
NA.23
PubChem Substance ID:
24873541
UNSPSC Code:
12162002
EC Number:
423-340-5
MDL number:
MFCD01863675

Key Documents

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Product Name

Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide, 97%, powder

InChI key

GUCYFKSBFREPBC-UHFFFAOYSA-N

InChI

1S/C26H27O3P/c1-16-12-18(3)23(19(4)13-16)25(27)30(29,22-10-8-7-9-11-22)26(28)24-20(5)14-17(2)15-21(24)6/h7-15H,1-6H3

SMILES string

Cc1cc(C)c(c(C)c1)C(=O)P(=O)(C(=O)c2c(C)cc(C)cc2C)c3ccccc3

assay

97%

form

powder
powder, crystals or chunks

mp

131-135 °C (lit.)

solubility

acetone, acetonitrile, toluene, and hexanediol diacrylate: soluble

Quality Level

300

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Application

Phenylbis(2,4,6-trimethylbenzoyl) phosphine oxide can be used as a photoinitiator for:
  • Radical polymerization of dental resins. BAPO enhances the polymerization rate and conversion compared to other initiators.
  • Preparation of divinylbenzene modified polymer-based ceramic materials for high temperature sensor applications.

General description

Phenylbis(2,4,6-trimethylbenzoyl) phosphineoxide (BAPO) is potential photoinitiator widely used in the preparation ofdental composites.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H317,H413

Hazard Classifications

Aquatic Chronic 4 - Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX9558
MKCX9559
MKCX1898
MKCT9357
MKCP8919

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Federico Lancia et al.
Nature communications, 10(1), 4819-4819 (2019-10-28)
The motion of artificial molecular machines has been amplified into the shape transformation of polymer materials that have been compared to muscles, where mechanically active molecules work together to produce a contraction. In spite of this progress, harnessing cooperative molecular
Kolczak, U. et al.
Journal of the American Chemical Society, 118, 6477-6477 (1996)
Maria Salem Ibrahim et al.
Materials (Basel, Switzerland), 11(9) (2018-08-29)
Dental sealants with antibacterial and remineralizing properties are promising for caries prevention among children and adolescents. The application of nanotechnology and polymer development have enabled nanoparticles of amorphous calcium phosphate (NACP) and dimethylaminohexadecyl methacrylate (DMAHDM) to emerge as anti-caries strategies
Mauricio Castellanos et al.
The journal of adhesive dentistry, 21(1), 67-76 (2019-02-26)
To evaluate the light transmittance of ceramic veneers of different thicknesses and verify their influence on the degree of conversion, color stability, and dentin bond strength of light-curing resin cements containing different photoinitiator systems. Experimental resin cements were fabricated containing
Michael J Beauchamp et al.
Micromachines, 9(7) (2018-11-15)
Interest has grown in recent years to leverage the possibilities offered by three-dimensional (3D) printing, such as rapid iterative changes; the ability to more fully use 3D device volume; and ease of fabrication, especially as it relates to the creation
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