Bromocresol Purple (Reag. USP) for analysis

Bromocresol Purple (Reag. USP) for analysis
Content: 25 GRM
Physical Description:
solid
Quality Name: for analysis
pH indicator 5,2 greenish yellow; 6,8 bluish purple
Specification: Identity@IR passes test§A 1% , 1 cm, ? max. 1 (calc. a.d.s.)@>400§A 1% , 1 cm, ? max. 2 (calc. a.d.s.)@>950§? of max. ABS@588 - 590 nm§? of max. ABS@427 - 433 nm§T.L.C.@passes test§CHAR(13) + CHAR(10) Maximum limit of impurities@§pH transition interval: greenish yellow@5.2§pH transition interval: bluish purple@6.8§Insoluble matter in C2H5OH@passes test§Loss on drying at 110°C@1%§Residue on ignition (as SO4)@0.5 %