Calcium nitrate

Calcium nitrate
Formula: 

Ca(NO3)2

Synonyms: 
Norwegian saltpeter
Description: 

Calcium nitrate is the calcium salt of nitric acid. It's extremly hygroscopic, much more than Sodium nitrate. Because of that it's not used much in pyrotechnics.

Sources: 

Calcium nitrate is used as a fertilizer..

Hazards: 

Calcium nitrate is an oxidizer, store separate from fuels and acids.

May cause irritation to skin, eyes and respiratory tract.