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511447

Sigma-Aldrich

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
EC Number:
423-340-5
MDL number:
MFCD01863675
UNSPSC Code:
12162002
PubChem Substance ID:
24873541
NACRES:
NA.23

Assay

97%

form

powder

mp

131-135 °C (lit.)

solubility

acetone, acetonitrile, toluene, and hexanediol diacrylate: soluble

SMILES string

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

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

InChI key

GUCYFKSBFREPBC-UHFFFAOYSA-N

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General description

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

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.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H317,H413

Hazard Classifications

Aquatic Chronic 4 - Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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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
Samantha Molina-Gutiérrez et al.
Molecules (Basel, Switzerland), 25(15) (2020-08-06)
Biobased monomers have been used to replace their petroleum counterparts in the synthesis of polymers that are aimed at different applications. However, environmentally friendly polymerization processes are also essential to guarantee greener materials. Thus, photoinduced polymerization, which is low-energy consuming
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
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)
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