The minor compounds, accounting for 0.01% to 8.5% of the total volatile compounds, included propanal, butanal, 3-methyl butanal, pentanal, heptanal, benzaldehyde, octanal, nonanal, butane, carbon disulfide, 2-butene, n-pentane, hexane, heptane, octane, ethylacetate, 2-butanone, 2,3-butanedione, 3-hydroxy-2-butanone, 2-heptanone
, 2,3-octanedione, dimethyl sulfide, ethanol, isopropyl alcohol, 1-pentanol, and 1,3,5-cycloheptatriene.
Values of the adiabatic compressibilities were calculated from the experimental results , The viscosity and density of binary mixtures cyclohexanol + 2-heptanone
, cyclohexanol + 2-hexanone and ternary mixture cyclohexanol + 2-hexanone + 2-heptanone
have been measured at the range of temperatures (293.15, 303.15 and 313.15K).
Pani and its composites have been applied as a sensor for Hg (II) , volatile basic nitrogen molecules [6, 7], aliphatic amines , acetone , toluene, triethylamine , pheromone 2-heptanone
, estradiol, humidity , corrosion protection , electro-reduction of C[O.sub.2] , membrane for the ion separation , removal Cu (II) in water , capacitors [17-21], battery [22-24], fuel cells , optical , electroanalytic , photoelectrochemical  and photocatalytic  applications.
Vapours of 2-heptanone
and 2-heptanol, isolated from A.
The inhibitory activity of clove is due to the presence of several constituents, mainly eugenol, eugenyl acetate, beta-caryophyllene, 2-heptanone
(Chaieb et al., 2007b), acetyl- eugenol, alpha-humulene, methyl salicylate, iso-eugenol, methyl-eugenol (Yang et al., 2003), phenyl propanoides, dehydrodieugenol, trans-confireryl aldehyde, biflorin, kaempferol, rhamnocitrin, myricetin, gallic acid, ellagic acid and oleanolic acid (Cai & Wu, 1996).
However, non-alcohol green leaf volatiles such as (Z)-3-hexenyl acetate and (E)-2-hexenal did not elicit any responses from the ORNs present in the trichoid sensilla examined in our study, except hexanal and 2-heptanone
, each of which elicited a weak response from ORN A1 (Table 3).
By this action, another volatile pheromone, produced in the mandibular glands (2-heptanone
), is released.
The smells of these four odorants are familiar, for those who can smell them (though their names may not be): malt (isobutyraldehyde), apple (EAA-damascenone), blue cheese (2-heptanone
), and EAA-ionone, which smells floral to some people and is particularly abundant in violets.
The natural anaesthetic is 2-heptanone
(2-H), a compound found in many foods and also secreted by certain insects, but never before understood to have anaesthetic properties.