Caustic soda (sodium hydroxide tia hriat bawk) hi industrial chemical hmanraw hrang hrang leh hman lar tak a ni a, industry hrang hrangah hman a ni a, chung zingah chuan textile, pulp leh paper, alumina, sahbawn leh detergent, petroleum refining leh tui tihthianghlim te pawh a tel. A tlangpuiin physical state pahnih, liquid (alkali) leh solid (flakes)-ah hralh a ni. Caustic soda flakes hi hmun hla takah phurh a awlsam zawk a, ram pawna thawn chhuahna atana hmanraw duh ber a ni. Company hi India rama caustic soda siamtu lian ber pahnihna a ni a, kum khatah ton maktaduai khat siamchhuah theih a ni.