Ultrasonic cannabinoid extraction using non-flammable co-solvent

A process for extracting tetrahydrocannabinol, cannabidiol, or both from cannabis consisting essentially of:

• a) mixing a co-solvent consisting essentially of 95-97% water and 3-5% ethanol by volume with cannabis to form a slurry;
• b) applying ultrasound to the slurry to extract cannabinoids from the cannabis into the co-solvent;
• c) filtering the slurry to remove solid particles from the slurry to form a filtered mixture;
• d) centrifuging the filtered mixture to remove solid particles from the centrifuged filtered mixture;
• e) adding potassium acetate to the centrifuged filtered mixture in order to break a water/ethanol azeotrope in the centrifuged filtered mixture;
• and
• f) distilling the centrifuged filtered mixture to remove the ethanol and the water with a distillation apparatus to yield tetrahydrocannabinol, cannabidiol, or both from cannabis.