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

BISMUTH  TRIOXIDE  REAGENT
(Bismuth (III) Oxide)

Synonyms:				Bismuthtrioxide; Bismuthous oxide; Bismuth Yellow

CAS No:				1304-76-3

Chemical Formula:			Bi2O3

Formula Weight:			465.96

Description:				Yellow, heavy, odorless & tasteless powder

Identification:			Positive for Bi +3

Appearance in solution (HNO3):	Clear, colorless, free from foreign matter

Loss on drying
(at 105 deg. C):			0.10% maximum

Assay (as Bi2O3):			99.5% minimum

Substances not precipitated
By NH4OH:				0.5 % maximum

Arsenic (As):				0.0002% maximum
Chloride (Cl):			0.001% maximum
Sulfate (SO4):			0.002% maximum
Iron (Fe):				0.002% maximum
Copper (Cu):				0.002% maximum
Lead (Pb):				0.003% maximum
Silver (Ag):				0.0005% maximum
Nitrate (NO3):			0.05% maximum

Effective Date:  02/03/09