IPC Subgroup
C01B 17/69 Sulfur trioxide; Sulfuric acid
Introduced: January 1980
Last revised: January 2006
Full Title
Sulfur; Compounds thereof > Sulfur trioxide; Sulfuric acid
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
Related Keywords
SULFURIC [acid]
4 direct subcodes
Child Classifications
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- C01B 17/7 Stabilisation of gamma-form sulfur trioxide
- C01B 17/74 Preparation
- C01B 17/88 Concentration of sulfuric acid
- C01B 17/9 Separation; Purification