WHAT IS THE USE OF CAUSTIC SODA Share with your friends Share 4 Geetha answered this 1) Soap and detergent preparation 2) Metal processing 3) Oil refining 4) Water treatment 0 View Full Answer Lalalla answered this pata nahi...??? -3 Reesha Ayeman answered this I DO NOT KNOW, SEARCH ON NET -4 Aakriti Jha answered this use of caustic soda is used for test the presence of proteins -1 Diya Shukla answered this dear akash you can refer to study material regards -3