will this work?

[theMan]

I need to prepare some DKDP, (potassium dideuterium phosphate). I have already prepared concentrated deuterated phosphoric acid. I sat down and thought of this reaction, but I don't know how well it would actually work, and considering good purity D2O costs somewhere around $2000/L, I don't want to mess this up. What do ya think? Any advice?

2D3PO4 + K2CO3 + D2O --> 2KD2PO4 + 2D2O + CO2

 

[Veramocor]

I was surprised and didn't think it was right but I checked a similar reaction http://wiki.answers.com/Q/What...d_and_sodium_carbonate and it seems to confirm your stoichiometry. Sodium and potassium are very similar as are D and H. I would have gone the route of D3PO4 + KOD + D2O -> KD2PO4 + 2D2O. but then you risk also pulling off more than one D (K2DPO4 and K3PO4).


This paper confirms both reactions: http://scifun.chem.wisc.edu/ch...df/Phosphoric_Acid.pdf (again using hydrogen and sodium)

 

[sjwaste]

I am not a chemist, so may I ask out of curiosity, what is DKDP useful for?

Edit: Nevermind. Wikipedia had a page on it.

http://en.wikipedia.org/wiki/P..._dideuterium_phosphate