Table 2.

Vapor pressure-dependence of odorant delivery stability

Odoranta	CAS #	Vapor pressure (mmHg, 25 °C)	τdelivery (s)
Acetophenone	98-86-2	0.397b	721.09
Benzaldehyde	100-52-7	1.27b	191.79
2-Octanone	111-13-7	1.35b	551.68
R-(+)-Limonene	5989-27-5	1.98b	222.73
4-Methylanisole	104-93-8	2.029c	153.18
Heptaldehyde	111-71-7	3.52b	398.78
2,6-Dimethylpyrazine	108-50-9	3.873c	262.36
(+)-α-Pinene	7785-70-8	4.75b	106.20
Isoamyl acetate	123-92-2	5.6b	122.00
4-Methyl-3-penten-2-one	141-79-7	8.21b	118.77
Hexaldehyde	66-25-1	11.3b	103.50
Butyl acetate	123-86-4	11.5b	202.83
2-Hexanone	591-78-6	11.6b	263.91
Ethyl butyrate	105-54-4	12.8c	142.13
2-Methylvaleraldehyde	123-15-9	16.915c	66.26
Trans-2-methyl-2-butenal	497-03-0	17.107c	117.96
Valeraldehyde	110-62-3	31.792c	42.52
2-Pentanone	107-87-9	35.4b	34.51
2-Methylbutyraldehyde	96-17-3	49.317c	23.58
Isovaleraldehyde	590-86-3	50b	28.05
Butane-2,3-dione	431-03-8	56.8b	26.77
2-Butanone	78-93-3	90.6b	17.43

^aPrepared at 1:10 liquid dilution.

^bPubChem (https://pubchem.ncbi.nlm.nih.gov/).

^cThe Good Scents Company Information System (http://www.thegoodscentscompany.com/).