Hello everyone, after precipitation from the free base of Amphate sulphate with sulphuric acid to pH 6 I filtered, dried, evaporated the solvent Acetone, the colour remained white, I made a test whether it would burn above 200 degrees, it began to melt and evaporated? I tried the sulphate on the tongue, the taste was very bitter, the smell was delicate, chemical? I took 10 ml of distilled water and threw in about 1-1.5 g of sulphate, I stirred gently and the water was as if I had not thrown anything into it, clean. so it is probably ok? also how can someone advise me in the reaction after adding p2np already, because the temperature will calm down in about 30 minutes, how the colour should be better because in one film it is dark grey and in the other light, Sziwy, does it have any effect on the quality, sorry for my questions, he gave you are obvious and I would like to know for sure that I do not know