Identity..............................................................................................IR p/t.

l of max. ABS in NaOH 0,1 mol/l........................................... 524-528 nm

A 1%, 1 cm, lmax............................................................................>1250

T.L.C..................................................................................................... p/t.

MAX. IMPURITIES

Insoluble matter in C2H5OH.................................................................. p/t.

Loss on drying at 135°C......................................................................5 %

Residue on ignition (as SO4)............................................................. 0,5 %

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

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

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

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