nonanoic acid

Nonanoic acid
IUPAC name	Nonanoic acid
Other names	Pelargonic acid, 1-Octanecarboxylic acid
Identifiers
CAS number	112-05-0 Y
PubChem	8158
EC number	203-931-2
KEGG	C01601
ChEBI	29019
SMILES	CCCCCCCCC(=O)O
Properties
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
Acidity (pKa)	4.96[1]
Hazards
R-phrases	R34
S-phrases	(S1/2) S26 S28 S36/37/39 S45
NFPA 704	1 3 0
Flash point	114 °C
Autoignition temperature	405 °C
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox 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.

References

1. ^ Lide, D. R. (Ed.) (1990). CRC Handbook of Chemistry and Physics (70th Edn.). Boca Raton (FL):CRC Press. 

External links

• MSDS at usbweb.com