Assay (as C6H10CaO4) calc. on the dried b.............................99,0-100,5%

Loss on drying, not more than............................................................4 %

pH of 10% solution........................................................................ 6,0-9,0

Insoluble substances in H2O, not more than.................................... 0,3 %

IInsoluble substances in acid, not more than................................... 0,2 %

Easily oxidable substances.................................................................. p/t.

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

Fluoride, not more than................................................................ 0,001 %

Iron, not more than........................................................................ 30 ppm

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

Heavy metals (as Pb), not more than............................................ 10 ppm

Magnesium (as MgO), not more than............................................... 0,4 %

Water, not more than........................................................................ 5,0 %

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