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Nonanoic acid

Nonanoic acid
IUPAC name Nonanoic acid
Other names Pelargonic acid, 1-Octanecarboxylic acid
CAS number 112-05-0
PubChem 8158
EINECS number 203-931-2
KEGG C01601
ChEBI 29019
Molecular formula C9H18O2
Molar mass 158.23 g/mol
Appearance Clear to yellowish oily liquid
Density 0.900 g/cm3
Melting point

12.5 °C

Boiling point

254 °C

Solubility in water 0.3 g/l
Main hazards Corrosive (C)
NFPA 704
R-phrases R34
S-phrases (S1/2) S26 S28 S36/37/39 S45
Flash point 114 °C
405 °C
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Nonanoic acid, also called pelargonic acid, is an organic compound composed of a nine-carbon chain terminating in a carboxylic acid with structural formula CH3(CH2)7COOH. Nonanoic acid forms esters - nonanoates. It is a clear, oily liquid with an unpleasant, rancid odor. It is nearly insoluble in water, but very soluble in chloroform, ether, and hexane.

Its refractive index is 1.4322. Its critical point is at 712 K (439 °C) and 2.35 MPa.

Occurrence and uses

Nonanoic acid is a fatty acid which occurs naturally as esters in the oil of pelargonium. Synthetic esters, such as methyl nonanoate, are used as flavorings.

Nonanoic acid is also used in the preparation of plasticizers and lacquers and as a herbicide.

The derivative 4-nonanoylmorpholine is an ingredient in some pepper sprays.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Nonanoic_acid". A list of authors is available in Wikipedia.
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