- Feb 6, 2010
Is it possible to use just sulfuric acid to test MDMA? I was under the impression that the sulfuric acid si what caused the color change in the marquis reagent.
...From Wikipedia, the free encyclopedia
The Marquis reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of formaldehyde and concentrated sulfuric acid, which is dripped onto the substance being tested. A possible recipe for the reagent is to add 2 drops of formaldehyde 40% to 3mL of concentrated sulfuric acid. Different compounds produce different colour reactions. Also some times methanol is added to slow down the reaction process to observe the change in colour better. Methanol does this by slowing down the polymerisation process.