DIFF Subgroup
C01B 17/04 from gaseous sulfur compounds including gaseous sulfides
Introduced: September 1968
Full Title
Sulfur; Compounds thereof > Preparation of sulfur; Purification > from gaseous sulfur compounds including gaseous sulfides
CPC subdivides this area 4x more granularly than IPC with 3 additional codes.
3 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
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