Search results

Hi Tor, What do you do with that bottom layer that you save?: "let the bottom layer cool and save for next time. ( we have no chemical waste for this preparation method )" Do make an extraction to get the remaining P2P diluted there? or do you add it to the BMK and fosforic acid in a new...

Hi, I made 2ml sulf 98% in 50ml acetone, but the final product has an horrible smell to acetone. Do you think that could be a good idea to use IPA instead of acetone? What should be the quantities? There is other product intead ipa or acetone, to decrease this strong smell?

Hi, as said, I repeated the process following the instructions of the document (and your comments) step by step. I got exactly the same product on this step: I took the oily layer (top layer, which has P2P) and once it cooled down after 10 minutes it has this aspect:. Then I added DCM over the...

I have no idea what is it, have you checked your precursor? What are you use for this synthesis? i used: cas 5449-12-7. I took off the P2P layer and with the rest, I made the extractions with DCM. Each extraction (the oily layer obtained when adding DCM), I combined them with the P2P. It was...

great, thanks! I will make the extraction combining DCM and brine. Just one question, I have to make 3 extractions with 100ml DCM + brine; but, how much brine on each extraction? it doesn't matter?

Hi, I followed the procedure step by step as mentioned in the instructions and it didn't work. I made several extractions of the "water" (bottom layer) using DCM and once I combined them (pouring over the P2P layer), there was some kind of reaction because lot of solids appeared. Anyway, I...

Is the washing of the extract (P2P oil) with brine made the same way as the washing with DCM? I mean, when adding brine to the p2p will I get two layers? In that case which one do I have to keep?

Hi! I made this process, and after this step: "2. Then, 200 ml HCl (35%) or 240 ml H2SO4 (45%) are added in small portions to Rm and heated to 80-90 °C and stired for 3 h. Rm have to be cooled to room temperature, the precipitate is filtered." This is what I have obtained (see the picture...

Tanks so much for your quick reply!

Hi, could you answer some doubts? 3.- What is the pH in this stage after wahsing with DCM? The wash with brine is mandatory? If yes, what is the concentration of NaCl solution? 4.- This is simple distilation at DCM boling point (around 40ºC) rigth? P2P Purification is worthy in yield terms...

Thanks so much for your quick reply!

Hi, some questions 1.- I have Mercury Chloride instead of Mercury (II) nitrate. Do I have to use 0,1g Mercury Chloride (HgCl2)? 2.- I have Acetic Acid 80%, so I used 62,5 ml. Is this OK? 3.- I prepared the sulphuric acid solution in IPA? Is OK? or must be Acetone? Thanks

I've made this process with the quantities indicated on the video and the reaction does not work (once the P2NP reaction is added to the amalgam, it does not react violentlly and the aluminium is not melted). Checking the video in detail, the quantities on the text and the proportios added on...

Thanks! just one more... concerning question 3 (extraction with ether), how is it made? I mean, I have to take off the oily layer (with P2P) and add the ether to the other layer in order to extract from there the interesting compound (P2P), is that correct?

Hi, COuld anybody answer some doubts? 1.- the alkalinization with NaOH 20%, which is the ph target? 2.- For the extraccion, could I use dichloromethane instead of diethyl ether? 3.- Which layer do I have to extract with several portions of ether (~3 x 50 mL)? 4.- What is "The combined...