TABLE 3.
Molar extinction coefficient values for aliphatic and aromatic compoundsa
| Aliphatic compound (acid) | ɛ value (mM−1 cm−1) | Aromatic compound (acid) | ɛ value (mM−1 cm−1) |
|---|---|---|---|
| Propionic | 1.84 | 3-Ph propionic | 0.81 |
| Butyric | 1.55 | 4-Ph butyric | 0.78 |
| Valeric | 0.92 | 5-Ph valeric | 0.72 |
| Hexanoic | 2.65 | 6-Ph hexanoic | 0.58 |
| Heptanoic | 2.70 | 7-Ph heptanoic | 0.49 |
| Octanoic | 1.56 | 8-Ph octanoic | 0.46 |
| Nonanoic | 1.19 | 9-Ph nonanoic | 0.45 |
| Decanoic | 1.10 | 10-Ph decanoic | 0.42 |
| Undecanoic | 0.82 | 11-Ph undecanoic | 0.37 |
| Dodecanoic | 0.85 | 12-Ph dodecanoic | 0.36 |
| Myristic | 0.79 | ||
| Pentadecanoic | 0.72 | 15-Ph pentanoic | 0.36 |
| Palmitic | 0.42 | 16-Ph hexanoic | 0.34 |
a
Ph, phenyl. All data are the averages of at least three determinations.