I-Caustic soda (eyaziwa nangokuthi i-sodium hydroxide) iyikhemikhali yezimboni eguquguqukayo futhi esetshenziswa kabanzi esetshenziswa ezimbonini ezahlukahlukene okuhlanganisa izindwangu, i-pulp nephepha, i-alumina, insipho kanye nensipho yokuhlanzwa, ukuhluzwa kwephethiloli kanye nokwelashwa kwamanzi. Ngokuvamile ithengiswa ngezimo ezimbili ezibonakalayo: uketshezi (i-alkali) kanye nokuqina (ama-flakes). Ama-Caustic soda flakes kulula ukuwathutha emabangeni amade futhi angumkhiqizo okhethwayo wokuthunyelwa kwamanye amazwe. Le nkampani ingumkhiqizi wesibili ngobukhulu we-caustic soda eNdiya onamandla okukhiqiza ngonyaka angamathani ayisigidi.