DIFF Subgroup
C01C 1/242 Preparation from ammonia and sulfuric acid or sulfur trioxide
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Ammonia; Compounds thereof > Sulfates of ammonium > Preparation from ammonia and sulfuric acid or sulfur trioxide
CPC:
Ammonia; Compounds thereof > Sulfates of ammonium (C01C1/14 takes precedence) > Preparation from ammonia and sulfuric acid or sulfur trioxide
No child classifications to compare. This is a leaf node in both IPC and CPC.