THERE IS SEVERAL REASONS BSHO ISNT A GOOD SOLVENT OF CHOICE WHEN IT COMES TO EXTRACTING ESSENTIAL COMPOUNDS OF INTEREST. FIRST, BUTANE IS DERIVED FROM CRUDE OIL. N-BUTANE DOESNT MEAN NASTY, IT MEANS NORMAL. ISOBUTANE IS MUCH CLEANER, BUT THERE IS REALLY NO PAYOUT USING SOMETHING CLEANER AS IT...