IPC Subgroup
C01B 33/16 Preparation of silica xerogels
Introduced: September 1968
Last revised: January 2006
Full Title
Silicon; Compounds thereof > Silicon oxides; Hydrates thereof > Silica; Hydrates thereof, e.g. lepidoic silicic acid > Preparation of silica xerogels
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF