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418110

Sigma-Aldrich

Isobutyraldehyde

redistilled, ≥99.5%

Synonym(s):

2-Methylpropanal, 2-Methylpropionaldehyde

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About This Item

Linear Formula:
(CH3)2CHCHO
CAS Number:
Molecular Weight:
72.11
Beilstein:
605330
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

vapor density

2.5 (vs air)

Quality Level

vapor pressure

66 mmHg ( 4.4 °C)

Assay

≥99.5%

form

liquid

autoignition temp.

384 °F

expl. lim.

10 %, 25 °F
2 %, 32 °F

refractive index

n20/D 1.374 (lit.)

bp

63 °C (lit.)

mp

−65 °C (lit.)

solubility

60 g/L at 25 °C

density

0.79 g/mL at 25 °C (lit.)

functional group

aldehyde

storage temp.

2-8°C

SMILES string

[H]C(=O)C(C)C

InChI

1S/C4H8O/c1-4(2)3-5/h3-4H,1-2H3

InChI key

AMIMRNSIRUDHCM-UHFFFAOYSA-N

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Application

Isobutyraldehyde has been used to investigate the renewable production of isobutyraldehyde from engineered Escherichia coli. It is also used as reagent during the epoxidation of cis-cyclooctene on iron complexed to acetylacetonate (acac)/silica xerogel.

Pictograms

FlameExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

-11.2 °F - closed cup

Flash Point(C)

-24 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Iron acetylacetonate complex anchored on silica xerogel polymer.
Brasil MC, et al.
Reaction Kinetics and Catalysis Letters, 63(2), 135-141 (2005)
The reactions of alkyl radicals. Part 2.-s-propyl radicals from the photolysis of isobutyraldehyde.
Kerr JA and Trotman-Dickenson AF.
Transactions of the Faraday Society, 55, 921-928 (1959)
Oxidative dehydrogenation of isobutyraldehyde to methacrolein over iron phosphate catalyst.
Muneyama E, et al.
J. Mol. Catal., 89(3), 371-381 (1993)
Specific anosmia to isobutyraldehyde: the malty primary odor.
MOORE JE, et al.
Chemical Senses, 2(1), 17-25 (1976)
Bettina M Pause et al.
Psychophysiology, 40(2), 209-225 (2003-06-25)
The aim of the present study was to investigate the similarities and differences in the olfactory and visual processing of emotional stimuli in healthy subjects and in patients with major depressive disorder (MDD). Twenty-five inpatients were investigated after admission to

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