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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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Kolczak, U. et al.
Journal of the American Chemical Society, 118, 6477-6477 (1996)
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
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
Damien Loterie et al.
Nature communications, 11(1), 852-852 (2020-02-14)
In tomographic volumetric additive manufacturing, an entire three-dimensional object is simultaneously solidified by irradiating a liquid photopolymer volume from multiple angles with dynamic light patterns. Though tomographic additive manufacturing has the potential to produce complex parts with a higher throughput
Alexandru Tudor et al.
Sensors (Basel, Switzerland), 16(2), 219-219 (2016-02-11)
Herein we describe poly(ionic liquid) hydrogel actuators that are capable of responding to multiple stimuli, namely temperature, ionic strength and white light irradiation. Using two starting materials, a crosslinked poly ionic liquid (PIL) and a linear poly(N-isopropylacrylamide-co-spiropyran-co-acrylic acid), several semi-interpenetrating
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