The insoluble reactant chosen depends upon the particular salt required. For example, copper does not react with dilute acids, so copper salts are made using copper oxide or copper carbonate ...

Glenny believed that aluminium salts were effective adjuvants because they allowed antigen to remain in the body for a long time and because the antigen was slowly released from the insoluble salt ...

HITHERTO it has seemed that thallium was the only heavy metal with but slight tendency to form water-insoluble normal and inner-complex salts with organic compounds of acid character. Monovalent ...