SECTION VI - PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES > CHAPTER 28 - INORGANIC CHEMICALS; ORGANIC OR INORGANIC COMPOUNDS OF PRECIOUS METALS, OF RARE-EARTH METALS, OF RADIOACTIVE ELEMENTS OR OF ISOTOPES > III. HALOGEN OR SULPHUR COMPOUNDS OF NON-METALS > 2813 Sulphides of non-metals; commercial phosphorus trisulphide > Other