- Nonanoic acid
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Nonanoic acid 
Nonanoic acidOther namesPelargonic acid, 1-Octanecarboxylic acidIdentifiers CAS number 112-05-0 
PubChem 8158 EC number 203-931-2 KEGG C01601 ChEBI CHEBI:29019 Jmol-3D images Image 1 - 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 Main hazards Corrosive (C) NFPA 704 
130Flash point 114 °C Autoignition
temperature405 °C 
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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.
The derivative 4-nonanoylmorpholine is an ingredient in some pepper sprays.
The ammonium salt of nonanoic acid, ammonium nonanoate, is used as an herbicide.
References
- ^ Lide, D. R. (Ed.) (1990). CRC Handbook of Chemistry and Physics (70th Edn.). Boca Raton (FL):CRC Press.
External links
Lipids: fatty acids Saturated VFA: Acetic (C2) · Propionic (C3) · Butyric (C4) · Valeric (C5) · Caproic (C6) · Enanthic (C7) · Caprylic (C8) · Pelargonic (C9) · Capric (C10) · Undecylic (C11) · Lauric (C12) · Tridecylic (C13) · Myristic (C14) · Pentadecanoic (C15) · Palmitic (C16) · Margaric (C17) · Stearic (C18) · Nonadecylic (C19) · Arachidic (C20) · Heneicosylic (C21) · Behenic (C22) · Tricosylic (C23) · Lignoceric (C24) · Pentacosylic (C25) · Cerotic (C26) · Heptacosylic (C27) · Montanic (C28) · Nonacosylic (C29) · Melissic (C30) · Hentriacontylic (C31) · Lacceroic (C32) · Psyllic (C33) · Geddic (C34) · Ceroplastic (C35) · Hexatriacontylic (C36)n−3 Unsaturated n−6 Unsaturated n−9 Unsaturated biochemical families: prot · nucl · carb (glpr, alco, glys) · lipd (fata/i, phld, strd, gllp, eico) · amac/i · ncbs/i · ttpy/iCategories:- Carboxylic acids
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