G.Patton

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Sometimes there is situation when you buy mephedrone but it's replaced with a-PVP in some cases. You have to check it for your health sake. Here I would like to present you the following qualitative method of a-PVP determination. In other words, how to distinguish a-PVP from mephedrone.

The method is clearly simple. You will need sodium bicarbonate (baking soda), water and the sample.
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The proposed reaction is characterized by color changing and smell releasing. When alkalizing a-PVP solution, it acquires light green color and releases distinct odor.

Step-by-step instruction:
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0,1 g of examined sample dilute in 5 ml of water (Solution 1).

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2. 2-3 g of baking soda dilute in 5 ml of water (it is not necessary to dilute it completely), stir it thoroughly (Solution 2).
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3. Add 1 ml of sodium bicarbonate solution (Solution 2) to the examined solution (Solution 1). Observe the result of the reaction.
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If the solution turns into light green color (like in the photo) you can conclude that a-PVP is prevailed in the sample. Along the color changing, you will also mention the pong.
If the solution has not changed the color, there is no a-PVP in the sample.

The experiment with mephedrone solution was also conducted, for example. In the photo below, you can see that the solution has not changed the color.
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Add baking soda solution to the mephedrone solution and observe if the color will have changed:
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Last edited:

propiophenone

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The question is, will this appear differently for a-PHiP or a-PCyP or a-PPP?

thank you
 

yin-yang

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Is reaction with a-pvp happening with impurities or with the molecule itself? Could you give me a breakdown for why it happens and why not with 4-mmc please?
 
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