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Merck
CN

D210404

2,5-Diphenyloxazole

99%, suitable for scintillation

Synonym(s):

DPO, PPO

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About This Item

Empirical Formula (Hill Notation):
C15H11NO
CAS Number:
92-71-7
Molecular Weight:
221.25
UNSPSC Code:
12352103
NACRES:
NA.23
PubChem Substance ID:
24893626
EC Number:
202-181-3
Beilstein/REAXYS Number:
157021
MDL number:
MFCD00005306
Assay:
99%
Form:
powder

Key Documents

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Product Name

2,5-Diphenyloxazole, 99%, suitable for scintillation

assay

99%

form

powder

Quality Level

200

bp

360 °C (lit.)

mp

72-74 °C (lit.)

λmax

303 nm

suitability

suitable for scintillation

InChI

1S/C15H11NO/c1-3-7-12(8-4-1)14-11-16-15(17-14)13-9-5-2-6-10-13/h1-11H

InChI key

CNRNYORZJGVOSY-UHFFFAOYSA-N

SMILES string

c1ccc(cc1)-c2cnc(o2)-c3ccccc3

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Application

PPO can be used as a dopant that improves the photo-electric feedback of plastic scintillators which are used as radiation detectors for nuclear materials. It can be coated on peptide substrates to facilitate radioactive labelling which can enable determination of substrate specificity of lysine methyltransferase enzymes. It may also be used in the fabrication of organic luminescent materials which can be used in light emitting diodes (LEDs).

General description

2,5-Diphenyloxazole (PPO) is an oxazole that can be used as a scintillator and a laser dye. It has fluorescence at a wavelength of 375 nm. It can be used as a wavelength shifter in liquid samples due to their high quantum yield and large strokes shift.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

386.6 - 393.8 °F - closed cup

flash_point_c

197 - 201 °C - closed cup

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
0000307100
MKCW2086
0000307100
MKCV2349
MKCT2237

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Methacrylate based cross-linkers for improved thermomechanical properties and retention of radiation detection response in plastic scintillators.
Mahl A, et al.
Nucl. Instrum. Methods Phys. Res., Sect. A, 884(10), 113-118 (2018)
An optimized method using peptide arrays for the identification of in vitro substrates of lysine methyltransferase enzymes.
Rowe EM and Biggar KK
MethodsX, 5(10), 118-124 (2018)
Phase transition pattern of 2, 5-diphenyloxazole/γ-cyclodextrin (PPO/-CD) self-assembly.
Agnew KA
Journal of Photochemistry and Photobiology A: Chemistry, 91(3), 205-210 (1995)
Synthesis and optical properties of highly luminescent phenyloxazole silane polymer.
Skorotetcky MS.
Mendeleev Communications, 27(4), 377-379 (2017)
H J Meyer et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 6(15), 2809-2817 (2000-09-14)
Spectral and time-resolved fluorescence properties as well as relative fluorescence quantum yields of carbodiimide derivatives of 2.5-diphenyloxazole (PPO) (prepared by H2S elimination from the corresponding thioureas), of some intermediates in the preparation, and of several other PPO derivatives were investigated
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