Minimum assay (Acidim.)............................................................... 99,0 %

pH of 5% solution.......................................................................... 5,0-8,0

MAX. IMPURITIES

Insoluble matter in H2O................................................................. 0,005 %

Residue on ignition (as SO4)......................................................... 0,005 %

Chlorine compounds (as Cl)........................................................... 0,01 %

Sulphur compounds (as S)........................................................... 0,015 %

Chloride (Cl).................................................................................... 0,01 %

Sulphate (SO4)................................................................................ 0,02 %

Reducing substances to KMnO4.......................................................... p/t.

Heavy metals (as Pb).................................................................... 0,001 %

Metals by ICP [mg/Kg (ppm)]

Ag..............................1

Al...............................5

As..............................1

Ba..............................5

Bi...............................5

Ca............................10

Cd..............................5

Co..............................5

Cr...............................5

Cu..............................5

Fe...............................5

K..............................50

Li................................5

Mg.............................5

Mn.............................5

Mo.............................5

Na............................50

Ni...............................5

Pb..............................5

Sr...............................5

Tl................................5

Zn..............................5