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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:
78-84-2
Molecular Weight:
72.11
Beilstein:
605330
EC Number:
201-149-6
MDL number:
MFCD00006980
UNSPSC Code:
12352100
PubChem Substance ID:
24866206
NACRES:
NA.22

vapor density

2.5 (vs air)

Quality Level

100

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.)

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
GHS02,GHS07

Signal Word

Danger

Hazard Statements

H225,H319

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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)
Hyunwoo Kim et al.
Organic letters, 11(1), 157-160 (2008-12-10)
Addition of isobutyraldehyde to 1,2-bis(2-hydroxyphenyl)-1,2-diaminoethane (mother diamine) cleanly gives a stable, fused imidazolidine-dihydro-1,3-oxazine ring complex. However, vigorous heating of the fused ring complex gives the diaza-Cope rearrangement product with excellent yield and stereoselectivity. A variety of alkyl aldehydes have been
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