Minimum assay.............................................................................. 99,0 %

Melting range (including 133,0°C)........................................................2°C

pH of 5% solution.......................................................................... 5,0-6,0

MAX. IMPURITIES

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

Loss on drying at 105°C................................................................... 0,5 %

Residue on ignition (as SO4)........................................................... 0,05 %

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

Heavy metals (as Pb).................................................................. 0,0005 %

Ca................................................................................................. 0,001 %

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

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

Cr................................................................................................ 0,0005 %

Cu............................................................................................... 0,0005 %

Fe................................................................................................ 0,0005 %

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

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

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

Na................................................................................................. 0,005 %

Ni................................................................................................ 0,0005 %

Pb............................................................................................... 0,0005 %

Zn............................................................................................... 0,0005 %