Things to avoid due to excessive lipophylicity are:
- Isopropyl alcohol and its azeotrope unless doing very specific things with it, usually in small batches.
- 200 proof ethanol
- Heptane (especially mixed isomers) denatured ethanol without water.
Things to use instead:
- 190 proof ethanol
- 190 proof ethanol (about 5% water in the ethanol portion) denatured with pure n-heptane