Assay (Perm.)........................................................................99,0-101,0%

pH of 5% solution................................................................................ 3-5

MAX. IMPURITIES

Insoluble matter in H2SO4............................................................. 0,005 %

Non-precipitated by NH4OH............................................................. 0,1 %

Chloride (Cl).................................................................................. 0,001 %

Phosphate (PO4)........................................................................... 0,002 %

Fe(III)............................................................................................... 0,02 %

Metals by ICP [mg/Kg (ppm)]

Al............................................................................................................50

Ca.........................................................................................................100

Cd...........................................................................................................10

Co...........................................................................................................50

Cu...........................................................................................................10

Hg...........................................................................................................10

K...........................................................................................................100

Mg..........................................................................................................50

Mn........................................................................................................200

Na.........................................................................................................100

Pb...........................................................................................................10

Sr............................................................................................................10

Zn...........................................................................................................30