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

pH of 5% solution...............................................................................≥3,0

MAX. IMPURITIES

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

Non precipitated substances by H2S............................................... 0,1 %

Nitrate (NO3).................................................................................. 0,015 %

Sulphate (SO4).............................................................................. 0,005 %

As............................................................................................... 0,0005 %

Ba................................................................................................. 0,005 %

Ca................................................................................................. 0,005 %

Cd............................................................................................... 0,0005 %

Co............................................................................................... 0,0005 %

Cr.................................................................................................. 0,005 %

Fe.................................................................................................. 0,005 %

K..................................................................................................... 0,01 %

Mg.............................................................................................. 0,0005 %

Mn.............................................................................................. 0,0005 %

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

Ni.................................................................................................. 0,005 %

Zn................................................................................................. 0,001 %