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

Melting range............................................................................ 179-182°C

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

MAX. IMPURITIES

pH transition inteRval:

red.........................................................................................................4,2

yellow....................................................................................................6,2

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)................................................................2 %