Dihydrate-hemihydrate process

Full Title

Phosphorus; Compounds thereof > Oxyacids of phosphorus; Salts thereof > Phosphoric acid > Preparation by reacting phosphate containing material with an acid, e.g. wet process > with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it , e.g. a mixture of sulfur dioxide, water and oxygen > one form of calcium sulfate being formed and then converted to another form > Dihydrate-hemihydrate process

Classification Context

Section:

CHEMISTRY; METALLURGY

Class:

INORGANIC CHEMISTRY

Subclass:

NON-METALLIC ELEMENTS; COMPOUNDS THEREOF