Calcium sulfide20548-54-333 % similar Potassium phosphide20770-41-633 % similar Barium sulfide21109-95-533 % similar Copper(I) sulfide22205-45-433 % similar Potassium chloride7447-40-733 % similar Potassium iodide7681-11-033 % similar Potassium bromide7758-02-333 % similar Potassium fluoride7789-23-333 % similar