Table 1.
Information and Exposure Conditions of Odorants.
| Odorant | CAS # | Molecular Formula | Vendor | Dilution in Air | Vapor Concentration (ppm) | Number of rats |
|---|---|---|---|---|---|---|
| Hexane | 110-54-3 | C6H14 | F | 1/8 | 24885 | 4 |
| Heptane | 142-82-5 | C7H16 | A | 1/8 | 7535 | 91 |
| Heptane | 142-82-5 | C7H16 | A | 1/24 | 2500 | 5 |
| Heptane | 142-82-5 | C7H16 | A | 1/75 | 800 | 5 |
| Heptane | 142-82-5 | C7H16 | A | 1/240 | 250 | 5 |
| Heptane | 142-82-5 | C7H16 | A | 1/750 | 80 | 5 |
| Octane | 111-65-9 | C8H18 | A | 1/8 | 2231 | 4 |
| Nonane | 111-84-2 | C9H20 | A | 1/8 | 705 | 4 |
| Decane | 124-18-5 | C10H22 | A | 1/8 | 229 | 4 |
| Undecane | 1120-21-4 | C11H24 | A | 1/8 | 66 | 4 |
| Dodecane | 112-40-3 | C12H26 | A | 1/8 | 29 | 4 |
| Tridecane | 629-50-5 | C13H28 | A | 1/8 | 6 | 4 |
| Tetradecane | 629-59-4 | C14H30 | A | 1/8 | 2 | 4 |
| Pentadecane | 629-62-9 | C15H32 | A | 1/8 | 0.4 | 92 |
| Pentadecane | 629-62-9 | C15H32 | AA | 1/8 | 0.4 | 5 |
| Pentadecane | 629-62-9 | C15H32 | S | 1/8 | 0.4 | 5 |
| Pentadecane | 629-62-9 | C15H32 | F | 1/8 | 0.4 | 5 |
| Hexadecane | 544-76-3 | C16H34 | A | 1/8 | 0.2 | 4 |
| 2-Dodecanone | 6175-49-1 | C12H24O | A | 1/10 | ND | 4 |
| 8-Pentadecanone | 818-23-5 | C15H30O | A | 1/10 | ND | 4 |
A: Acros; AA: Alfa Aesar; S: Sigma; F: Fluka; ND: Not determined because our calculation is not applicable to odorants diluted in mineral oil.
1
Four rats were used for the homologous series experiment, whereas five were used for the concentration experiment.
2
Four rats were used for the homologous series experiment, and five were used for the purity experiment.