Assay (as KH2PO4) after drying, not less than................................ 98,0 %

Appearance........................................................................................... p/t

Identity:

Phosphate............................................................................................ p/t.

Potassium............................................................................................. p/t.

pH of 1% solution.......................................................................... 4,2-4,8

Arsenic (as As), not more than........................................................ 3 ppm

Fluoride, not more than................................................................. 10 ppm

Insoluble substances as an. subs., not more than........................... 0,2 %

P2O5 content...........................................................................51,0-53,0 %

Loss on drying, not more than............................................................1 %

Cadmium (Cd), not more than......................................................... 1 ppm

Lead, not more than........................................................................ 2 ppm

Mercury (Hg), not more than........................................................... 1 ppm