Benzaldehyde



Benzaldehyde
IUPAC name Benzaldehyde
Systematic name Benzenecarbaldehyde
Other names Phenylmethanal
Benzenecarboxaldehyde
Benzoic aldehyde
Identifiers
CAS number 100-52-7
SMILES c1ccccc1C=O
Properties
Molecular formula C7H6O
Molar mass 106.13 g/mol
Appearance colorless liquid
Density 1.0415 g/ml, liquid
Melting point

−26 °C

Boiling point

178.1 °C

Solubility in water Slightly soluble
(0.6 wt at 20 °C)
Viscosity 1.4 cP at 25 °C
Thermochemistry
Std enthalpy of
formation ΔfHo298 		−86.8 kJ/mol
Std enthalpy of
combustion ΔcHo298 		−3525.1 kJ/mol
Hazards
MSDS J. T. Baker
EU classification Harmful (Xn)
NFPA 704
2
2
0
 
R-phrases R22
S-phrases S24
Flash point 63 C (Closed Cap)
Related Compounds
Related aldehydes vanillin
Related compounds Benzoic acid
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Benzaldehyde (C6H5CHO) is a chemical compound consisting of a toluene by a number of different processes.

Production

Benzaldehyde can be obtained by many processes. Currently liquid phase carbon monoxide.

Reactions

On oxidation, benzaldehyde is converted into unpleasant smelling benzoin.


Benzaldehyde can also undergo carboxylic acid. The speed of this reaction depends on the substituents present in the aromatic ring.

Uses

While it is commonly employed as a commercial food flavourant (almond flavour) or industrial dyes.

The synthesis of mandelic acid starts from benzaldehyde:


First enantiomers).

Glaciologists LaChapelle and Stillman reported in 1966 that benzaldeyde and N-heptaldehyde inhibit the recrystallization of snow and therefore the formation of depth hoar. This treatment may prevent avalanches caused by unstable depth hoar layers. However, the chemicals are not in widespread use because they damage vegetation and contaminate water supplies.[citation needed]

Biology


Almonds, apricots, apples and glucose.

References
     
    This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Benzaldehyde". A list of authors is available in Wikipedia.