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

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

MAX. IMPURITIES

pH transition interval:

greenish yellow......................................................................................3,0

blue........................................................................................................4,6

Transition interval according to ACS.................................................... p/t.

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

Loss on drying at 110°C......................................................................5 %

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

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

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

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

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