I find that MDA is heavier then MDMA..I have done pure MDA back in the 80's when MDMA wasn't really heard of.. I found that it made me feel extreamly stoned..As opposed to MDMA which gives me a clear headed feeling...
I found this little tid bit of info on the net.....
There are observed differences in humans between the effects of MDA and MDMA. Studies other than the one reported by Shulgin in 1980 have shown MDA to have duration of action in humans of 12 to 15 hours, as compared to four to six hours for MDMA. MDA has beem found to produce a mild cognitive impairment in humans at the 75mg. dose level, while MDMA did not impair cognition even at 200mg. As MDA dosages increase from 75 to 200mg., the effects in humans become increasingly similar to the effects of LSD, including the presence of visions. As dosages of MDMA increase from 75 to 200mg., the intensity of the sense of wellbeing and inner flow of associations which characterize the experience increase only moderately while the ego functions remain intact, cognition is unimpaired and visions are notably absent. Large doses of MDA (200mg) produce significantly greater disorientation and an up-welling of visuals images that are not characteristic of MDMA in similar dose range....
And yes thank you i already know all about tlc plates...They are on there way ;o)