Assay (Acidim.).......................................................................69,0-72,0 %

MAX. IMPURITIES

APHA colour...........................................................................................10

Insoluble matter in H2O......................................................................... p/t.

Residue on ignition....................................................................... 0,003 %

Nitrogen compounds (as N)......................................................... 0,001 %

Chlorine (Cl)................................................................................ 0,0005 %

Chlorate (ClO3)............................................................................ 0,0012 %

Chloride (Cl)................................................................................ 0,0003 %

Phosphate and Silicate (as PO4)................................................. 0,0005 %

Sulphate (SO4).............................................................................. 0,001 %

Heavy metals (as Pb).................................................................. 0,0001 %

As........................................................................................... 0,000005 %

Metals by ICP [mg/Kg (ppm)]

Ag...........................0,1

Al............................0,1

Ba...........................0,1

Be...........................0,5

Ca..............................1

Cd.........................0,05

Co...........................0,1

Cr............................0,1

Cu.........................0,05

Fe...............................1

K................................1

Mn........................0,05

Na..............................5

Ni..........................0,05

Pb...........................0,1

Sr............................0,5

Zn...........................0,1