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B1334

Sigma-Aldrich

Benzaldehyde

ReagentPlus®, ≥99%

Synonym(s):

Bitter almond

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About This Item

Linear Formula:
C6H5CHO
CAS Number:
100-52-7
Molecular Weight:
106.12
Beilstein/REAXYS Number:
471223
EC Number:
202-860-4
MDL number:
MFCD00003299
UNSPSC Code:
12352100
eCl@ss:
39023701
PubChem Substance ID:
57653918

vapor density

3.7 (vs air)

Quality Level

200

vapor pressure

4 mmHg ( 45 °C)

product line

ReagentPlus®

assay

≥99%

form

liquid

autoignition temp.

374 °F

expl. lim.

1.4 %, 20 °F

refractive index

n20/D 1.545 (lit.)

pH

5.9 (20 °C)

bp

178-179 °C (lit.)

mp

−26 °C (lit.)

density

1.044 g/cm3 at 20 °C (lit.)

SMILES string

O=Cc1ccccc1

InChI

1S/C7H6O/c8-6-7-4-2-1-3-5-7/h1-6H

InChI key

HUMNYLRZRPPJDN-UHFFFAOYSA-N

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General description

Benzaldehyde is an aromatic aldehyde. Rotational transitions in benzaldehyde have been explained based on its microwave absorption spectrum. The conversion of benzaldehyde into reduced compounds in the presence of metal oxides has been studied. SmFeO3 (perovskite-type oxide catalyst) catalyzed cyanosilylation reaction of benzaldehyde with trimethylsilyl cyanide (TMSCN) has been reported.

Application

Benzaldehyde has been used as a standard in the quantification of Achillea ligustica essential oil by GC-MS (Gas Chromatography-Mass Spectrometry).
Benzaldehyde may be used in the following studies:
  • Preparation of optically active 1-phenylpropan-1-ol.
  • Synthesis of meso-tetraphenylporphins and chlorins.
  • As a test compound to study oxidative amidation reaction of aliphatic primary/secondary amines using N-heterocyclic carbine as a catalyst.
  • Synthesis of 2-phenyl-2,3-dihydro-4H-pyran-4-one with high enantioselectivity by hetero-Diels-Alder (HDA) reaction with Danishefsky′s diene.

Quality

Chlorine-free

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

signalword

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Repr. 1B - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

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

wgk_germany

WGK 1

flash_point_f

145.4 °F

flash_point_c

63 °C

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Microwave Spectrum of Benzaldehyde.
Kakar RK, et al.
J. Chem. Phys., 52(7), 3803-3813 (1970)
B Rosche et al.
Applied microbiology and biotechnology, 57(3), 309-315 (2002-01-05)
Extracts of 14 filamentous fungi were examined regarding their potential for production of (R)-phenylacetylcarbinol [(R)-PAC], which is the chiral precursor in the manufacture of the pharmaceuticals ephedrine and pseudoephedrine. Benzaldehyde and pyruvate were transformed at a scale of 1.2 ml
Reduction of benzaldehyde on metal oxides.
Haffad D, et al.
J. Catal., 172(1), 85-92 (1997)
Gas phase hydrogenation of benzaldehyde over supported copper catalysts. Effect of copper loading.
Lanasri K, et al.
Studies in Surface Science and Catalysis, 174, 1279-1282 (2008)
Cyanosilylation of benzaldehyde with TMSCN over perovskite-type oxide catalyst prepared by thermal decomposition of heteronuclear cyano complex precursors.
Yamaguchi S, et al.
Research on Chemical Intermediates, 41(12), 9551-9560 (2015)
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