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Sigma-Aldrich

Benzaldehyde

puriss. p.a., ≥99.0% (GC)

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Synonym(s):
Bitter almond
Linear Formula:
C6H5CHO
CAS Number:
100-52-7
Molecular Weight:
106.12
Beilstein:
471223
EC Number:
202-860-4
MDL number:
MFCD00003299
UNSPSC Code:
12352300
eCl@ss:
39023701
PubChem Substance ID:
329749593
NACRES:
NA.21

vapor density

3.7 (vs air)

Quality Level

200

vapor pressure

4 mmHg ( 45 °C)

grade

puriss. p.a.

Assay

≥99.0% (GC)

form

liquid

autoignition temp.

374 °F

expl. lim.

1.4 %, 20 °F

impurities

chlorine, none detected
≤0.001% nitrobenzene (C6H5NO2)
≤1% acid (as benzoic acid)

refractive index

n20/D 1.545 (lit.)
n20/D 1.545

pH

5.9 (20 °C)

bp

178-179 °C (lit.)

mp

−26 °C (lit.)

density

1.044 g/cm3 at 20 °C (lit.)

cation traces

Ca: ≤5 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤1 mg/kg
K: ≤20 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Na: ≤20 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Zn: ≤1 mg/kg

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 the simplest aromatic aldehyde building block.

Application

Benzaldehyde has been used in:

  • Preparation of optically active 1-phenylpropan-1-ol.
  • Synthesis of meso-tetraphenylporphins and chlorins.

Other Notes

Sales restrictions may apply

Signal Word

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

WGK

WGK 1

Flash Point(F)

145.4 °F

Flash Point(C)

63 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Porphyrinogens and porphodimethenes, intermediates in the synthesis of meso-tetraphenylporphins from pyrroles and benzaldehyde.
Dolphin D.
Journal of Heterocyclic Chemistry, 7, 275-283 (1970)
Yves F Widmer et al.
eLife, 7 (2018-10-23)
Lasting changes in gene expression are critical for the formation of long-term memories (LTMs), depending on the conserved CrebB transcriptional activator. While requirement of distinct neurons in defined circuits for different learning and memory phases have been studied in detail
Enantioselective addition of diethylzinc to benzaldehyde catalyzed by a small amount of chiral 2-amino-1-alcohols.
Oguni N and Omi T.
Tetrahedron Letters, 25(26), 2823-2824 (1984)
Determination of base properties of hydrotalcites: condensation of benzaldehyde with ethyl acetoacetate.
Corma A, et al.
J. Catal., 134(1), 58-65 (1992)
A green process for chlorine-free benzaldehyde from the solvent-free oxidation of benzyl alcohol with molecular oxygen over a supported nano-size gold catalyst.
Choudhary VR, et al.
Green Chemistry, 7(11), 768-770 (2005)
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