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E29109

Sigma-Aldrich

2-Ethylhexanal

96%

Synonym(s):

2-Ethylcapronaldehyde

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About This Item

Linear Formula:
CH3(CH2)3CH(C2H5)CHO
CAS Number:
123-05-7
Molecular Weight:
128.21
Beilstein:
1700556
EC Number:
204-596-5
MDL number:
MFCD00006987
UNSPSC Code:
12352100
PubChem Substance ID:
24894488
NACRES:
NA.22

Quality Level

100

Assay

96%

form

liquid

impurities

<4% 2-ethylhexanoic acid

refractive index

n20/D 1.415 (lit.)

bp

55 °C/13.5 mmHg (lit.)

density

0.822 g/mL at 25 °C (lit.)

SMILES string

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

InChI

1S/C8H16O/c1-3-5-6-8(4-2)7-9/h7-8H,3-6H2,1-2H3

InChI key

LGYNIFWIKSEESD-UHFFFAOYSA-N

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General description

2-Ethylhexanal is an aliphatic aldehyde used as an intermediate to produce various useful products such as perfumes, disinfectants, paints, warning agents, insecticides, and leak detectors.

Application

2-Ethylhexanal can be used as:
  • A reductant in the Mukaiyama epoxidation of cis-cyclooctene.
  • A reactant in the Horner-Wadsworth-Emmons reaction to synthesize cis-α,β-unsaturated amides.
  • A starting material to synthesize 2-ethylhexanoic acid using manganese(II) acetate as a catalyst.

Signal Word

Warning

Hazard Statements

H226,H317,H361

Hazard Classifications

Flam. Liq. 3 - Repr. 2 - Skin Sens. 1

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

111.2 °F - closed cup

Flash Point(C)

44 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Factors affecting the selectivity of air oxidation of 2-ethyhexanal, an α-branched aliphatic aldehyde
Lehtinen C and Brunow G
Organic Process Research & Development, 4, 544-549 (2000)
David M Hodgson et al.
The Journal of organic chemistry, 78(4), 1508-1518 (2013-01-30)
The synthesis and alkylation of chiral, nonracemic tropane- and homotropane-derived enamines is examined as an approach to enantioenriched α-alkylated aldehydes. The two bicyclic N auxiliaries, which differ by a single methylene group, give opposite senses of asymmetric induction on alkylation
D L Wood et al.
Poultry science, 63(3), 469-477 (1984-03-01)
Di-(2-ethylhexyl) phthalate (DEHP) and three structurally related side-chain analogs were fed to laying hens to determine relationships of structure to effects on lipid metabolism. Hubbard broiler breeder hens were fed either a standard laying mash control diet or the control
G Casperson et al.
Journal of basic microbiology, 26(5), 259-269 (1986-01-01)
Analogs of the natural substance (E)-hex-2-en-1-al which occurs naturally in green plants and is known to have microbiocidal properties were synthesized and studied with respect to their antifungal properties. Saturated and unsaturated aldehydes, alcohols, carbon acids and enolacetate were tested
Heather L Voegtle et al.
Journal of chemical ecology, 34(2), 215-219 (2008-01-24)
E-2-ethyl-2-hexen-1-ol (1), mellein (4), and 4-hydroxymellein (5) were identified as the major volatile compounds in the head and/or thorax of Camponotus quadrisectus. Neither 1 nor 5 have been previously detected in insects. Also identified were small amounts of m-cresol (2)
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