Minimum assay (Compl.)................................................................ 98,0 %

pH of 5% solution.......................................................................... 4,5-8,5

MAX. IMPURITIES

Insol. matter in H2O and precip. by NH4OH.................................... 0,01 %

Oxidizing substances (as NO3)..................................................... 0,003 %

Phosphate (PO4)........................................................................... 0,001 %

Sulphate (SO4)................................................................................ 0,01 %

Ammonium (NH4).......................................................................... 0,005 %

Heavy metals (as Pb).................................................................. 0,0005 %

As............................................................................................... 0,0001 %

Ba................................................................................................. 0,005 %

Cu............................................................................................... 0,0005 %

Fe................................................................................................ 0,0025 %

Mg................................................................................................ 0,005 %

Mn.............................................................................................. 0,0005 %

Ni................................................................................................ 0,0005 %

Pb............................................................................................... 0,0005 %

Sr.................................................................................................... 0,01 %

Zn................................................................................................. 0,001 %