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Merck
CN

50296

Melting point standard 47-49°C

analytical standard

Synonym(s):

Benzophenone, Diphenyl ketone, Diphenylmethanone, NSC 8077

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About This Item

Linear Formula:
(C6H5)2CO
CAS Number:
119-61-9
Molecular Weight:
182.22
UNSPSC Code:
20121904
NACRES:
NA.24
PubChem Substance ID:
329757586
EC Number:
204-337-6
Beilstein/REAXYS Number:
1238185
MDL number:
MFCD00003076

Key Documents

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Product Name

Melting point standard 47-49°C, analytical standard

InChI key

RWCCWEUUXYIKHB-UHFFFAOYSA-N

InChI

1S/C13H10O/c14-13(11-7-3-1-4-8-11)12-9-5-2-6-10-12/h1-10H

SMILES string

O=C(C1=CC=CC=C1)C2=CC=CC=C2

grade

analytical standard

vapor pressure

1 mmHg ( 108 °C)

shelf life

limited shelf life, expiry date on the label

bp

305 °C (lit.)

mp

47-49 °C (±0.3°C)
47-51 °C (lit.)

application(s)

food and beverages
pharmaceutical

format

neat

Quality Level

100

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Application

Benzophenone melting point standard 47-49 °C is a melting point calibration standard for use in physicochemical characterization.

Features and Benefits

  • Traceable to primary standards from LGC, London
  • Grade: Analytical Standard
  • Melting point standardized in the thermodynamic mode of analysis
  • Standard deviation up to ± 0.3 °C
  • Available with certificates of analysis and safety data sheet

General description

Analytical standards such as melting point standard 47-49 °C, benzophenone facilitate the determination of identity or purity of chemical compounds. The mp value is measured as an average of 6 to 12 measurements with a Büchi B-545 instrument that is calibrated against primary standards. The melting point is determined by Capillary method, as described in European Pharmacopeia (2.2.14.).
This substance is listed on the positive list of the EU regulation 10/2011 for plastics intended to come into contact with food. Find all available reference materials for compounds listed in 10/2011 here

pictograms

Health hazard
GHS08

signalword

Danger

Hazard Classifications

Aquatic Chronic 3 - Carc. 1B - STOT RE 2 Oral

target_organs

Liver,Kidney

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 1

flash_point_f

280.4 °F - closed cup

flash_point_c

138 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

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Comparative toxicity related to metabolisms of benzophenone-type UV filters, potentially harmful to the environment and humans
Jeon, Hee-Kyung
Molecular & Cellular Toxicology (2017)
Green procedure for the preparation of scented alcohols from carbonyl compounds
Villa C, et al.
International Journal of Cosmetic Science (2008)
Real-time imaging of melting and crystallization in poly (ethylene oxide) by atomic force microscopy.
Pearce R and Vancso J G.
Polymer, 39(5), 1237-1242 (1998)
Masayuki Kyomoto et al.
Biomaterials, 34(32), 7829-7839 (2013-07-31)
We investigated the production of free radicals on a poly(ether-ether-ketone) (PEEK) substrate under ultraviolet (UV) irradiation. The amount of the ketyl radicals produced from the benzophenone (BP) units in the PEEK molecular structure initially increased rapidly and then became almost
Young-Jin Kim et al.
Angewandte Chemie (International ed. in English), 51(42), 10537-10541 (2012-09-20)
Caught in a web: Photo-cross-linkable temperature-responsive polymer-based nanofiber webs have been synthesized that have the ability to capture, encapsulate, and release cells by dynamically transforming the fibrous structure into hydrogel-like structures by wrapping, swelling, and deswelling processes in response to
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