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

l1 of max. ABS at pH 5,2........................................................ 429-433 nm

l2 of max. ABS at pH 6,8........................................................ 588-590 nm

A 1%, 1 cm, l1 max............................................................................>300

A 1%, 1 cm, l2 max............................................................................>750

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

MAX. IMPURITIES

pH transition interval:

greenish yellow......................................................................................5,2

bluish purple..........................................................................................6,8

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

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

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

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