IPC Subgroup
C01B 25/222 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
Introduced: January 1980
Last revised: January 2006
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
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
3 direct subcodes
Child Classifications
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- C01B 25/223 only one form of calcium sulfate being formed
- C01B 25/228 one form of calcium sulfate being formed and then converted to another form
- C01B 25/232 Preparation by reacting phosphate containing material with concentrated sulfuric acid and subsequently lixiviating the obtained mass, e.g. clincker process