Question Mdma tartrate

[sameoldstory]

Does anyone know how much tartaric acid I would need to go with MDMA freebase to make the tartrate? I am not talking about seperating isomers, just making the tartrate,

Any idea of the correct ratio?

I have tried this out before with the citrate (very water soluble)n and the tartrate but this was a long time ago, part of my brain is saying something along the lines of 0.232g tartaric acid per 1g freebase, but I can't remember 100% or find any literature or notes I used to have,

thanks in advance

 

[Mr Good Cat]

why wouldn't you check molar weight of both? it is not secret file.
mdma fb - 193.246
tartaric acid - 150.087