IPC Subgroup
C01B 17/24 Preparation by reduction
Introduced: September 1968
Last revised: January 2006
Full Title
Sulfur; Compounds thereof > Alkali metal sulfides or polysulfides > Preparation by reduction
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
2 direct subcodes
Child Classifications
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- C01B 17/26 with carbon
- C01B 17/28 with reducing gases