i started with 10 grams of precursor (CAS 52190-28-0) which I dissolved with 50ml DCM, then mixed well by hand with a spoon until precursor was properly dissolved, then added 20ml methylamine 40% aqueous solution to the dissolved precursor and in a very short period after mixing with the spoon by hand 2 layers were formed, I separated the aqueous layer from the base with the help of a pipette and added 6ml of ethyl acetate to the aqueous layer after mixing for a short period of time I added again the aqueous layer that I mixed with ethyl acetate to the base, then I added 10ml of water to the base to wash it and I stirred it until 2 layers were formed, but before adding the water the 2 layers were also formed, after removing the aqueous layer of the base i added 2 grams of magnesium sulphate and let it dry for a while, then i checked the pH and it was 7, then i made a 9ml solution of 35-38% lab grade hydrochloric acid with 1ml of acetone and mixed it well, then I added the solution drop by drop to the base and checked the pH each time, and it was still at 7 and then I added a little more solution and the pH was less than 1, instead it should be 5 ,5. In total I added about 5ml of the solution, and I exceeded the quantity, then I took filter paper, filtered it and supposedly left the methylone hydrochloride dry, then I took a methylone anti-drug test and I think it was not positive, no idea.