Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED 28 Inorganic chemicals;organic or inorganic compounds of precious metals, ofrare-earth, of radioactive elements or of isotopes 28 15 HYDROXIDES AND PEROXIDES OF SODIUM OR POTASSIUM Commodity Code Description 28 15 11 Solid 28 15 12 In aqueous solution (soda lye or liquid soda) 28 15 20 Potassium hydroxide (caustic potash) 28 15 30 Peroxides of sodium or potassium