I am working on my own semi soylent formula… I am using a high quality multivitamin and a few other supplements on their own and adding to the drink those elements not accounted for. (will post formula here when done :))
Anyway, I am almost done but am having trouble with the Phosphorus component. Monosodium Phosphate / Calcium Phosphate are options, but can’t find any decent looking sources here in the UK (and am not to keen on loading up on sodium anyway), but I did find dipotassium phosphate here: http://www.myprotein.com/sports-nutrition/dipotassium-phosphate/10530446.html
The problem is, it is hard to find much info on this stuff… it seems to be a food additive and generally safe but I can’t even find out conclusively how much is potassium and how much is phosphorous, entering K2HPO4 on a few molar mass calculators (such as http://www.webqc.org/mmcalc.php) gives: Potassium: 44.90%, Phosphorous: 17.78%, Oxygen: 36.74%, Hydrogen: 0.58% (though disturbingly some calculators give a different percentage ;))
Also, I assume the rda is dealing with phosphorous § not phosphate (po)?
Can anyone clarify any of this, or provide any further info about this substance? ( I dread to think what this stuff will taste like ;))