S P E C I F I C A T I O N S

CALAMINE POWDER USP

Synonyms:				Zinc oxide; Chinese white; Flowers of zinc

CAS No.:				1314-13-2

Chemical Formula:			ZnO with Fe2O3

Formula Weight:			81.38

Description:				Pink, odorless powder

Identification A & B:		To pass tests

Assay:					98.0% to 100.5%

Microbial Limits:			To pass test

Loss on ignition:			2.0% maximum

Acid-insoluble substances:	2.0% maximum

Alkaline substances:		To pass test

Arsenic (As):				8 ppm maximum

Calcium (Ca): 			To pass test

Calcium & Magnesium:		To pass tests

Lead (Pb):				To pass test

Effective: 01/27/09