I-Caustic soda (lephindze yatiwe ngekutsi yi-sodium hydroxide) yikhemikhali leyehlukahlukene futsi lesetjentiswa kakhulu etimbonini lesetjentiswa etimbonini letiningi letifaka ekhatsi tindvwangu, i-pulp kanye nemaphepha, i-alumina, insipho kanye netintfo tekuhlanta, kucolisa phethilomu kanye nekuhlanta emanti. Ivame kutsengiswa ngetindlela letimbili letibonakalako: lesemantini (alkali) kanye nalecinile (emaflakes). Emacembe eCaustic soda kulula kuwatfutsa emabanga lamadze futsi ngumkhicito lokhetsiwe wekutfumela ngaphandle. Lenkampani ngumkhiciti wesibili lomkhulu we caustic soda eNdiya ngemandla ekukhicita emathani lasigidzi sinye ngemnyaka.