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

MAX. IMPURITIES

Insoluble matter in HCl................................................................. 0,015 %

Oxidizing substances (as NO3)..................................................... 0,005 %

Non-precipitated substances by H2SO4........................................... 0,5 %

Alkaline carbonates and hydroxides.................................................... p/t.

Chloride (Cl).................................................................................. 0,002 %

Sulphide (S).................................................................................. 0,001 %

Ca................................................................................................... 0,05 %

Cu................................................................................................. 0,001 %

Fe.................................................................................................. 0,002 %

K................................................................................................... 0,005 %

Na................................................................................................... 0,01 %

Ni.................................................................................................. 0,001 %

Pb................................................................................................. 0,001 %