Standard hardware store acetone is 5-10% water. Water dissolves METH-HCl extremely well.
Preparation of Anhydrous Acetone: Drying with molecular sieves (3A or 4A) or baking Epsom salt (MgSO₄) at 250°C for 2 hours, then adding to acetone and filtering. washing meth with acetone free
The obsession with "washing meth with acetone free" is a symptom of a deeper pathology. The addicted mind believes that if they could just get purer drugs, they could use less, feel better, and avoid the "craziness" of street cuts. This is a lie. Standard hardware store acetone is 5-10% water
Here is the most misunderstood aspect of this process. When a chemist (or an informed user) demands "acetone free," they are not referring to the acetone being free of a chemical called "free." Nor are they looking for the "free" brand of acetone. they could use less
"Acetone free" is shorthand for "acetone that is free of water."
The correct chemical term is anhydrous acetone (an-hy-drous, from Greek an- "without" + hydor "water").