… in the presence of natural impurities or added foreign matter. This treatment causes a change in the structure of … in the case of crystalline substances, distortions in the lattice due to the insertion or substitution of atoms with …
… - - For malaria 3822.12 - - For Zika and other diseases transmitted by mosquitoes of the genus Aedes 3822.13 - - For … compounds of Chapter 28 or Chapter 29, synthetic colouring matter of heading 32.04 or any other substance which, when …
… excess sulphur and smelted in a furnace to produce copper matte or regulus. In some cases the concentrated ore is … furnace (“flash smelting”) without prior roasting. The matte is treated in a converter to eliminate most of the … welding electrodes. * * * This Chapter covers : (A) Mattes and other intermediate products of copper metallurgy …
