HS CodesVI · Products of the chemical or allied industries28 · Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes2815281512281512Chapter 28Copy pageIn aqueous solution (soda lye or liquid soda)DescriptionSodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium : Sodium hydroxide (caustic soda) : In aqueous solution (soda lye or liquid soda)Was this page helpful?YesNoPrevious281511SolidNextPotassium hydroxide (caustic potash)281520