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538124

Sigma-Aldrich

Propionaldehyde

reagent grade, 97%

Synonym(s):
Propanal
Linear Formula:
CH3CH2CHO
CAS Number:
Molecular Weight:
58.08
Beilstein:
506010
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

grade

reagent grade

vapor density

2 (vs air)

vapor pressure

18.77 psi ( 55 °C)
4.89 psi ( 20 °C)

assay

97%

form

liquid

autoignition temp.

404 °F

expl. lim.

17 %, 26 °F
2.6 %, 31 °F

impurities

≤2.5% (water)

refractive index

n20/D 1.362 (lit.)

bp

46-50 °C (lit.)

mp

−81 °C (lit.)

solubility

organic solvents: soluble

density

0.805 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

[H]C(=O)CC

InChI

1S/C3H6O/c1-2-3-4/h3H,2H2,1H3

InChI key

NBBJYMSMWIIQGU-UHFFFAOYSA-N

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General description

Propionaldehyde, also known as propanal, is commonly utilized as an intermediate in organic reactions. It can be synthesized by the oxidation of propane in gas-phase. Photodissociation behavior of propionaldehyde has been investigated by the Paneth mirror method. The degradation mechanism of propionaldehyde on Rh(111) surface has been analyzed using temperature programmed desorption (TPD) and high resolution electron energy loss spectroscopy (HREELS). 2-Çhloropropionaldehyde has been synthesized from propionaldehyde, via electrochemical chlorination. The presence of two stable rotamers in propionaldehyde has been reported based on microwave spectral data.

Packaging

1 L in glass bottle
250 mL in glass bottle

Other Notes

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. 538124.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK Germany

WGK 1

Flash Point(F)

-22.0 °F - closed cup

Flash Point(C)

-30 °C - closed cup

Certificate of Analysis

Certificate of Origin

Reactions of 1-propanol and propionaldehyde on rhodium (111).
Brown NF and Barteau MA.
Langmuir, 8(3), 862-869 (1992)
Eagleson M.
Concise Encyclopedia Chemistry, 898-898 (1994)
Chlorination of propionaldehyde by electrolysis of aqueous chloride solutions.
Maksimov KHA, et al.
Russian Journal of Applied Chemistry, 68(4), 524-526 (1995)
Microwave spectrum of propionaldehyde.
Butcher SS and Wilson Jr EB.
J. Chem. Phys. , 40(6), 1671-1678 (1964)
Mechanism of the Photolysis of Propionaldehyde.
Garrison WM and Burton M.
J. Chem. Phys. , 10(12), 730-739 (1942)

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