What is the differentiation between pure and non pure cocaine?

Cocaine pure/mpure: Cocaine in its purest form is a white, pearly product. Cocaine appearing in powder form is a salt, typically cocaine HCL. Street market cocaine is frequently adulterated or “cut” with various powdery fillers to increase its wt; the substances used in process are baking soda; sugars--lactose, dextrose, inositol, & mannitol; & local anesthetic. Pure C disolves in sulfuric acid with no coloration.