Assay (Iodom.)..............................................................................79-82 %
Density at 20/4........................................................................... 1,26-1,28
Residue on ignition (as SO4)........................................................... 0,01 %
Sensitivity to Fe.................................................................................... p/t.
Cu............................................................................................... 0,0005 %
Fe................................................................................................ 0,0005 %
Ni................................................................................................ 0,0005 %
Pb............................................................................................... 0,0005 %