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Sigma-Aldrich

Benzaldehyde

purified by redistillation, ≥99.5%

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Synonym(s):
Bitter almond
Linear Formula:
C6H5CHO
CAS Number:
Molecular Weight:
106.12
Beilstein/REAXYS Number:
471223
EC Number:
MDL number:
UNSPSC Code:
12352100
eCl@ss:
39023701
PubChem Substance ID:
NACRES:
NA.22

vapor density

3.7 (vs air)

Quality Level

vapor pressure

4 mmHg ( 45 °C)

assay

≥99.5%

form

liquid

autoignition temp.

374 °F

purified by

redistillation

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 (bitter-almond oil) is an aromatic compound commonly used in the cosmetics and flavor industries. The natural source of benzaldehyde is amygdalin, a glycoside found in apricots, bitter almonds, apples, cherries etc. Benzaldehyde is commercially produced by liquid phase chlorination and oxidation of toluene. Other methods reported to produce benzaldehyde include oxidation of benzyl alcohol, hydrolysis of benzal chloride and carbonylation of benzene.

Application

Benzaldehyde can be used as a precursor to synthesize:
  • Cinnamaldehyde, cinnamic acid, ethyl cinnamate, benzoic acid, benzyl alcohol, benzyl benzoate and hydrobenzamide etc.
  • Triphenylmethane derivatives by condensation with phenols, aromatic amines, and benzene. This reaction is useful for the production of malachite green dyes.
  • Benzoylborane by reacting with borylmagnesium bromides.
  • Multi-benzaldehyde functionalized poly(ethylene glycol) analog which is used as a cross-linker to develop an injectable hydrogel system.

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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_germany

WGK 1

ppe

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


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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