Propionaldehyde

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| NFPA 704 |
Propionaldehyde

Systematic name Propanal
Synonyms Propionaldehyde
Methylacetaldehyde
Propionic aldehyde
Propaldehyde

Chemical formula C₃H_{6_O}
SMILES CCC=O
Molecular mass 58.080 g mol⁻¹
Appearance Colorless liquid
Pungent, fruity odor
CAS number [123-38-6]
UN number 1275
Properties
Density 0.81 g cm⁻³
Solubility in water 20 g/100 ml (? °C)
Melting point −81°C (192 K)
Boiling point 46-50°C (321 K)
Viscosity 0.6 cP at 20°C
Structure
Molecular shape C₁, O: sp² C₂, C₃: sp³
Dipole moment 2.52 D
Hazards
MSDS External MSDS
EU classification Highly flammable (F)
Irritant (Xi)

|- R-phrases R11, R36/37/38 S-phrases S9, S16, S29 Flash point −26°C Autoignition temperature 175°C RTECS number ? Supplementary data page Structure and
properties n, ε_r, etc. Thermodynamic
data Phase behaviour
Solid, liquid, gas Spectral data UV, IR, NMR, MS Related compounds Related aldehydes Formaldehyde
Acetaldehyde
Butanal [Chemical infoboxDisclaimer and references]

''Note that propanol is a different compound.

In organic chemistry, propanal or propionaldehyde is the aldehyde of the 3 carbon propyl group. It has a chemical formula of CH₃CH₂CHO, and is a structural isomer of propanone. At room temperature, it is a colourless liquid with a slightly irritating, fruity odour.

Production

Propanal is mainly produced through the Fischer-Tropsch synthesis, combining synthesis gas (carbon monoxide and hydrogen) with ethene over a metal catalyst:

CO + H₂ + C₂H₄ → CH₃CH₂CHO

It is principally used to make trimethylolethane through condensation with methanol; this process is important in the production of alkyd resins.

For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].

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Propionaldehyde

Systematic name	Propanal
Synonyms	Propionaldehyde Methylacetaldehyde Propionic aldehyde Propaldehyde
Chemical formula	C₃H_{6_O}
SMILES	CCC=O
Molecular mass	58.080 g mol⁻¹
Appearance	Colorless liquid Pungent, fruity odor
CAS number	[123-38-6]
UN number	1275
Properties
Density	0.81 g cm⁻³
Solubility in water	20 g/100 ml (? °C)
Melting point	−81°C (192 K)
Boiling point	46-50°C (321 K)
Viscosity	0.6 cP at 20°C
Structure
Molecular shape	C₁, O: sp² C₂, C₃: sp³
Dipole moment	2.52 D
Hazards
MSDS	External MSDS
EU classification	Highly flammable (F) Irritant (Xi)