... .Foliar fertilizer and 100% soluble 3.High phosphate and high Potassium Mono potassium phosphate(MKP)MKP tech grade 0-52-34/NPK ... Formula:KH2PO4, Molecular Weight:136.09, Monopotassium phosphate (also potassium dihydrogen phosphate, KDP, or monobasic potassium phosphate, MKP) -- KH2PO4 -- is a soluble salt ...