39277-51-5 55624-62-9 7440-38-2 ARSENIC Arsen [German,Polish] Arsenic Black Arsenic [UN1558] [Poison] Arsenic and arsenic compounds Arsenic and certain arsenic compounds Arsenic compounds Arsenic, elemental Arsenic, inorganic Arsenic, organic compounds Arsenic, water-soluble compounds, n.o.s. Arsenic-75 Arsenicals CCRIS 55 Colloidal arsenic EINECS 231-148-6 Gray arsenic Grey arsenic HSDB 509 Metallic arsenic UN1558