Antimon 3N5 - 7N

5N Plus manufactures indium antimonide (InSb) wafers that are used to manufacture high sensitivity infrared detectors, including thermal imaging cameras. The antimony sold by 5N Plus is also used by RW (rewritable) CD and DVD manufacturers. This technology is based on the use of a thin layer of compound composed of tellurium and antimony. Antimony, a shiny silvery-white metalloid, has been known since ancient times. However, the French chemist Nicolas Lémery first described how antimony was obtained in 1707. Significant amounts of antimony are extracted from copper and lead residues.