Please do not boil your NP solvents, this is unnecessary and dangerous.
Instead, use a hot water bath. Spice dissolves fine in warm heptane or naphtha, and can be either freeze pricip'ed or evap'ed.
The solvents are never hot enough to vape the product.
She finds patient mixing with a glass eye-dropper works perfectly.
Best,
L
"The first principle is that you must not fool yourself, and you are the easiest person to fool." Richard P. Feynman