Ni aina ya kiwanja isokaboni, pia inajulikana kama caustic soda, caustic soda, caustic soda, hidroksidi sodiamu ina alkali kali, babuzi sana, inaweza kutumika kama neutralizer asidi, pamoja na masking kikali, precipitating kikali, mvua masking kikali, rangi kikali, wakala wa saponification, wakala wa peeling, sabuni, nk, matumizi ni pana sana.