... and other organic chemical products; and sodium sulfide, ion-exchange membrane (or diaphragm) caustic soda, potassium hydroxide, chromic anhydride, sodium hydrosulfide, calcium chloride dihydrate , sulfur ... for sulfur dye, disodium hydrogen phosphate, sodium phosphate, magnesium chloride, sodium sulfate, sulfonate, alkali metal carbonate, sodium and other minerals benzoin solution, and ...