Zinc Oxide, NILE CHEMICALS

SPECIFICATION
ZnO M.W. 81.38
Minimum Assay ( by complexometry
on ignited subtances )	99%
Maximum Limits Of Impurities :
Subtances insoluble in acid and carbonate	passes test
Free alkali ( as NaOH )	0.12%
Chloride ( CI )	0.005%
Sulphate ( SO₄ )	0.02%
Arsenic ( As )	0.0005%
Lead ( Pb )	0.005%
Iron ( Fe )	0.001%
Subtances reducing KMnO₄ ( as O )	0.0008%
Residue on ignition ( 900^OC )	1%