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Merck
CN

73906

4,4′-Difluorobenzophenone

analytical standard

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About This Item

Linear Formula:
(FC6H4)2CO
CAS Number:
345-92-6
Molecular Weight:
218.20
UNSPSC Code:
77101502
NACRES:
NA.24
PubChem Substance ID:
329765325
EC Number:
206-466-3
Beilstein/REAXYS Number:
516231
MDL number:
MFCD00000353

Key Documents

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Product Name

4,4′-Difluorobenzophenone, analytical standard

InChI key

LSQARZALBDFYQZ-UHFFFAOYSA-N

InChI

1S/C13H8F2O/c14-11-5-1-9(2-6-11)13(16)10-3-7-12(15)8-4-10/h1-8H

SMILES string

Fc1ccc(cc1)C(=O)c2ccc(F)cc2

grade

analytical standard

assay

≥98.0% (GC)

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

mp

102-105 °C (lit.)

application(s)

environmental
pharmaceutical

format

neat

Quality Level

100

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Analysis Note

The purity is calculated based on the principle of mass balance and is mentioned on the CoA

Application

4,4′-Difluorobenzophenone (DFBP) may be used as an analytical reference standard for the determination of the analyte in water samples and DFBP/valerophenone mixture solutions by various chromatography techniques.

General description

4,4′-Difluorobenzophenone is typically used as a starting material for the preparation of polyetheretherketone (PEEK) polymer, a high-temperature thermoplastic, which finds wide use in dentistry as well as in automotive, oil industries, etc.
This substance is listed on the positive list of the EU regulation 10/2011 for plastics intended to come into contact with food.

Other Notes

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

pictograms

Exclamation markEnvironment
GHS07,GHS09

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

305.6 °F - Pensky-Martens closed cup

flash_point_c

152 °C - Pensky-Martens closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
BCBW7181

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An improved automatic analyzer for organic compounds in water based on headspace solid-phase microextraction (SPME) coupled to gas chromatography
Belau E, et al.
Field Analytical Chemistry & Technology, 5(1-2), 37-49 (2001)
Applications of polyetheretherketone (PEEK) in oral implantology and prosthodontics
Najeeb S, et al.
Journal of Prosthodontic Research, 60(1), 12-19 (2016)
An automatic analyzer for organic compounds in water based on solid-phase microextraction coupled to gas chromatography
Grote C, et al.
Analytical Chemistry, 71(20), 4513-4518 (1999)
Intelligent peak deconvolution through in-depth study of the data matrix from liquid chromatography coupled with a photo-diode array detector applied to pharmaceutical analysis
Arase S, et al.
Journal of Chromatography A, 1469(1-2), 35-47 (2016)
The formation of 4, 4?-difluorobenzophenone from 4, 4?-dinitrodiphenylmethane
Adams DJ, et al.
Journal of Fluorine Chemistry, 92(2), 127-129 (1998)

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