DEA originally based its decision to define the persons performing the reverse distribution function as disposers on the definition of manufacturer.. In 21 CFR 1300.01(b)(27), DEA defines manufacture in part as the producing, preparation, propagation, compounding, or processing of a drug or other substance . . . ..
Potassium sorbate is a chemical that is formed when potassium salt bonds with sorbic acid, creating a fatty acid salt that is polysaturated. At room temperature, it looks like a white crystalline powder, but the mixture will quickly dissolve in water, which will revert it back to sorbic acid as the potassium dissolves.
1 In treating penile yeast infection, potassium sorbate is very helpful in stopping and preventing yeast from growing on the penis.  Just use a little water to make a paste, then apply the paste directly onto the infected skin of the penis.