NOSIA: Nonbreakable sodium ignition apparatus Upper part of cone Hot water adding limb Socket Extract taking out capillary
Perforated head of cone to prevent jumping out Na and compound
Extract holding part
Na + compound fusion zone
NOSIA is green and resource saving device for extra elements detection in organic compounds using sodium metal to convert organic compound into salts. Jean Louis Lassaigne (Sept. 1800March 1859), French chemist, initially developed a concept of sodium fusion test to detect halogens, nitrogen and sulphur, which are covalently bonded to organic compounds. For detection, these are converted into their ionic forms by fusing the compound with Na metal. On fusion the ionic compounds are formed and are extracted in aqueous solution and are detected by simple chemical tests. The extract is referred to as sodium fusion extract or Lassaigne's extract. N Test: C and N on fusion with Na metal forms sodium cyanide (NaCN) soluble in water and is transformed in to sodium ferrocyanide (Na4[Fe(CN)6] with ferrous sulphate. Ferric ions react with ferrocyanide to form blue precipitate of ferric ferrocyanide.
Ferric ferrocyanide Cl Test: Cl forms NaCl on fusion with Na metal and is extracted with water and is identified with AgNO3 solution with dil. HNO3.
S Test: The S with Na forms Na2S and S2- are identified using sodium nitroprusside.