Bismuth trioxide

Bismuth yellow
Formula: 

Bi2O3

Synonyms: 
Bismuth (III) oxide, Bismuth yellow
Description: 

It is used in crackling stars (Dragon's eggs) as a non-toxic substitute for toxic lead compounds. For this purpose it is mixed with magnalium and copper oxide.

Sources: 

Bismuth yellow can be found at various Pyro supplies. The major defect is the comparatively high price of bismuth.

Hazards: 

Harmful by inhalation, in contact with skin and if swallowed.

Wear suitable protective clothing when working with Bismuth yellow, such as dust mask and latex gloves.

Compositions containing Bismuth trioxide :