I work as a laboratory / pharmacist technician and the following are some remarks regarding the intravenous use of mephedrone.
I have prepared hundreds of solutions of 4-methylmethcathinone and concerning the solubility of the chemical, I've been able to produce a concentration of approx. 300 mg / mL. Indirect heat was used sparingly to help break down the clumps of mephedrone.
The solutions is a slight straw-color.
If a great deal of heat is used, the mephedrone can be put into a solution with a concentration of nearly 500 mg / mL but when the liquid is left alone the salt precipitates out, crystalizing the entire solution and irrecoverably ruins the dose.
All my solutions are made with either sterile saline or sterile LRS as the solvent.
Regarding intravenous use of C11H15NO: IDUs under my care report an icy feeling inside the heart, which I'm told is an aspect of the rush. From what I can gather from patients' reports, the chill appears to be idiopathic and regardless of patient's age or sex all report a momentarily intense cold sensation in what I'm thinking is the aorta distal to the left pulmonary artery.
My apologies if I am bumping an ancient thread.
fuck safe, shoot clean