| abstract |
Fragrance compositions containing volatile organic acids may be used to eliminate amine malodours from an air-space. The acids are characterised by having (i) a pKa at 250C of from 3 to 5, preferably a pKa of from 3.5 to 4.5; (ii) a vapour pressure, at 250C, greater than 0.1 µm Hg, preferably greater than 1 µm Hg, even more preferably between 1 and 100 µm Hg. Preferred acids are cinnamic acid, phenylacetic acid, benzoic acid and 2- pentycyclopropanecarboxylic acid, and combinations thereof, present at levels of at least 0.2% by weight, more preferably 0.5% by weight in the fragrance. |