IPC Subgroup
C01B 17/58 Recovery of sulfur dioxide from acid tar or the like
Introduced: September 1968
Last revised: January 2006
Full Title
Sulfur; Compounds thereof > Sulfur dioxide; Sulfurous acid > Preparation of sulfur dioxide > Recovery of sulfur dioxide from acid tar or the like
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF