DPIA inside my amphetamine - intentional?

[justfortemp]

Hello experienced chemists,

Im already a silent reader for some time here but decided to make an account as I do have a question.

Can someone please explain me how DPIA Di(beta-phenylisopropyl)amin finds its way into my amhetamine?
I test every amphetamine I receive from my source and the harm reduction laboratory regularly reports DPIA contamination inside the amphetamine.
Can someone tell me if this was put in intentional or how the DPIA come into existence? Maybe bad synthesis?


Thank you for your help

 

[G.Patton]

Hello, it's just a side product of the synthesis. Don't worry. I guess there is no more than couple presents of DPIA, am I right?

 

[justfortemp]

Hey G.Patton,

Thanks for your reply
Indeed, its only found inside but the amount is too low to determine.
However, what made me sceptical is that the purity decreased significantly over time.
We started at 70% purity and the last few batches all "only" scored 45-50%.
But no other psychoactive substances found.
So could it be that the source knows im testing it and mix it up with non active substances like mannitol that wont be detected by the laboratory. Or is it possible that a lower quality oil or a bad manufacturing process can lower the purity that much?Its probably hard to say, but would love to hear the view of an expert.

Does this side product of the synthesis (DPIA) means its not done good because it obviously must be avoidable as I had a lot of samples without it as well?

Thank you for your time to reply to my questions!

 

[UWe9o12jkied91d]

Hey G.Patton,

Thanks for your reply
Indeed, its only found inside but the amount is too low to determine.
However, what made me sceptical is that the purity decreased significantly over time.
We started at 70% purity and the last few batches all "only" scored 45-50%.
But no other psychoactive substances found.
So could it be that the source knows im testing it and mix it up with non active substances like mannitol that wont be detected by the laboratory. Or is it possible that a lower quality oil or a bad manufacturing process can lower the purity that much?Its probably hard to say, but would love to hear the view of an expert.

Does this side product of the synthesis (DPIA) means its not done good because it obviously must be avoidable as I had a lot of samples without it as well?

Thank you for your time to reply to my questions!

justfortempWere inactive ingredients also characterized? I'm wondering what the rest of 30% to 100% is

 

[PNicole]

Amphetamine salts are notoriously unstable and go bad pretty fast. Even pharmaceutical preparation using pure pharmaceutical ingredients can have this problem.

Or is it possible that a lower quality oil or a bad manufacturing process can lower the purity that much?Its probably hard to say, but would love to hear the view of an expert.

Yes. Purity can vary greatly. Any residual byproducts can cause lower quality and sometimes dramatically. That last step of titrating with sulfuric acid can a killer. Also the typical reaction done with Al/Hg is messy and can leave many salts behind. LAH reaction is cleaner but I am not sure if many utilize it. I have seen samples (beautiful white and crystalline) testing at various purities. The only variable was the operator's execution of the reaction.

I have never understood why anyone uses amphetamine over racemic methamphetamine and why it more pppular in Europe.

 

[justfortemp]

@UWe9o12jkied91d
Unfortunately not, they only checked for psychoactive substances.

@PNicole thank you for your response.