... 1. Caustic soda, also known as: sodium hydroxide (caustic soda flake, solid base, liquid caustic soda), caustic soda; Huo Jian; ... fatty acids, usually oil and caustic soda, caustic soda, sodium hydroxide as raw materials made through the saponification reaction. ( ... the pulp), caustic soda, sodium hydroxide, carbon disulfide (CS2) as the raw material made of viscose liquid, by spraying silk, ...