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W292303

Sigma-Aldrich

Propionaldehyde

≥97%, FG

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Synonym(s):
Propanal
Linear Formula:
CH3CH2CHO
CAS Number:
123-38-6
Molecular Weight:
58.08
FEMA Number:
2923
Beilstein:
506010
EC Number:
204-623-0
Council of Europe no.:
90
MDL number:
MFCD00007020
PubChem Substance ID:
24901394
Flavis number:
5.002

biological source

synthetic

Quality Level

400

grade

FG
Fragrance grade
Halal
Kosher

Agency

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002
FDA 21 CFR 172.515

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

refractive index

n20/D 1.362 (lit.)

bp

46-50 °C (lit.)

mp

−81 °C (lit.)

density

0.805 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

chocolate; cocoa; nutty; whiskey; wine-like

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

Natural occurrence: Apple, banana, blue cheese, cauliflower, cooked pork, grape brandy, potato chips, sake, tea, whiskey and wine.
Propionaldehyde is a key volatile constituent of whole Granny Smith apples, onions and ginger.

Biochem/physiol Actions

Taste at 5-10 ppm

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

WGK 1

Flash Point(F)

-22.0 °F - closed cup

Flash Point(C)

-30 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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Volatile Phoducts of Apples III. Identification of Aldehydes and Ketones.
Huelin FE
Australian Journal of Biological Sciences, 5(3), 328-334 (1952)
Cynthia A Morgan et al.
Chemico-biological interactions, 234, 29-37 (2014-12-03)
The human aldehyde dehydrogenase (ALDH) superfamily consists of at least 19 enzymes that metabolize endogenous and exogenous aldehydes. Currently, there are no commercially available inhibitors that target ALDH1A1 but have little to no effect on the structurally and functionally similar
Onion flavor and odor, the volatile flavor components of onions.
Carson JF & Wong FF
Journal of Agricultural and Food Chemistry, 9(2), 140-143 (1961)
Michela Salamone et al.
The Journal of organic chemistry, 76(11), 4645-4651 (2011-04-30)
A kinetic study of the hydrogen atom abstraction reactions from propanal (PA) and 2,2-dimethylpropanal (DMPA) by the cumyloxyl radical (CumO•) has been carried out in different solvents (benzene, PhCl, MeCN, t-BuOH, MeOH, and TFE). The corresponding reactions of the benzyloxyl
Chenguang Fan et al.
Proceedings of the National Academy of Sciences of the United States of America, 109(37), 14995-15000 (2012-08-29)
Bacterial microcompartments (MCPs) are a widespread family of proteinaceous organelles that consist of metabolic enzymes encapsulated within a protein shell. For MCPs to function specific enzymes must be encapsulated. We recently reported that a short N-terminal targeting sequence of propionaldehyde
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