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Merck

43861

Furan

analytical standard

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About This Item

Empirical Formula (Hill Notation):
C4H4O
CAS Number:
Molecular Weight:
68.07
UNSPSC Code:
85151701
NACRES:
NA.24
PubChem Substance ID:
EC Number:
203-727-3
Beilstein/REAXYS Number:
103221
MDL number:
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Product Name

Furan, analytical standard

InChI

1S/C4H4O/c1-2-4-5-3-1/h1-4H

SMILES string

c1ccoc1

InChI key

YLQBMQCUIZJEEH-UHFFFAOYSA-N

grade

analytical standard

vapor density

2.35 (vs air)

vapor pressure

1672 mmHg ( 55 °C)
31.66 psi ( 55 °C)
493 mmHg ( 20 °C)
9.22 psi ( 20 °C)

assay

≥98.0% (GC)

shelf life

limited shelf life, expiry date on the label

contains

~0.025% 2,6-di-tert-4-methylphenol as stabilizer

expl. lim.

14.3 %

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

refractive index

n20/D 1.421 (lit.)
n20/D 1.421

bp

32 °C/758 mmHg (lit.)

density

0.936 g/mL at 25 °C (lit.)

application(s)

cleaning products
cosmetics
environmental
food and beverages
personal care

format

neat

storage temp.

2-8°C

Quality Level

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Application

Furan can undergo Diels-Alder [4+2] cycloaddition reaction with maleic anhydride to form the corresponding exo and endo furan-maleic anhydride adducts.
Furan may be used as an analytical reference standard for the quantification of the analyte in heat-processed foods using gas chromatography-mass spectrometry (GC-MS).
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

General description

Furan is a clear and colorless liquid, and a bimolecular heterocycle, which can be used to trap unstable intermediates containing highly reactive species, via Diels-Alder cycloaddition reactions.
Furan, a naturally occurring compound associated with the flavor of food, is found at very low levels in a variety of food products and beverages. It finds applications as a solvent for resins and lacquers as well as in the preparation of organic compounds, in pharmaceuticals, etc. Furan is also reportedly identified in heat treated food products, including cooked chicken, fish protein concentrate, caramel back, canned meat, bread, coffee, etc.
This compound is listed in the SVHC (Substances of very high concern) candidate list of ECHA (European Chemicals Agency)

signalword

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Carc. 1B - Flam. Liq. 1 - Muta. 2 - Skin Irrit. 2 - STOT RE 2

supp_hazards

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

-32.8 °F - closed cup

flash_point_c

-36 °C - closed cup


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Analysis of furan in heat-processed foods in China by automated headspace gas chromatography-mass spectrometry (HS-GC-MS)
Nie P-S, et al.
Food Control, 30(1), 62-68 (2013)
Furan in Food ? a Review
Vranova J and Ciesarova Z
Czech Journal of Food Sciences, 27(1), 1-10 (2009)
Synthetic applications of furan Diels-Alder chemistry
Kappe O.C, et al.
Tetrahedron, 53(42), 14179-14233 (1997)
Simultaneous determination of furan and 2-alkylfurans in heat-processed foods by automated static headspace gas chromatography-mass spectrometry
Shen M, et al.
LWT--Food Science and Technology, 72, 44-54 (2016)
Luca Chiari et al.
The Journal of chemical physics, 138(7), 074302-074302 (2013-03-01)
Cross section results from a joint experimental and theoretical investigation into positron scattering from 3-hydroxy-tetrahydrofuran (3H-THF) are presented. Total and positronium (Ps) formation cross sections have been measured from 1 to 190 eV using the positron beamline at the Australian

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