Insoluble matter in H2O................................................................... 0,05 %

Loss on drying at 150°C.........................................................13,0-15,0 %

Chloride (Cl).................................................................................. 0,005 %

Nitrate (NO3).................................................................................. 0,005 %

Cu................................................................................................. 0,005 %

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

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

Pb................................................................................................. 0,005 %