The sodium fusion test, or Lassaigne's test, is used in elemental analysis for the qualitative determination of the presence of foreign elements, namely halogens, nitrogen, and sulfur, in an organic compound. It was developed by J. L. Lassaigne. The test involves heating the sample with sodium metal, "fusing" it with the sample. A variety of techniques has been described. The "fused" sample is plunged into water, and the qualitative tests are performed on the resultant solution for the respective possible constituents.
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| - Natrium-Aufschluss (de)
- Fusión alcalina con sodio (es)
- Sodium fusion test (en)
- Teste de Lassaigne (pt)
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| - Der Natrium-Aufschluss ist der Aufschluss meist organischer Substanzen mit elementarem Natrium unter starkem Erhitzen. Hierbei werden bestimmte Elemente der organischen Substanz in leicht lösliche Natriumsalze überführt. Die Untersuchung dieser Salze ermöglicht den Nachweis von Stickstoff, Schwefel und Halogenen in der ursprünglichen Substanz, weswegen der Natrium-Aufschluss zur Elementaranalyse in der qualitativen organischen Analyse Anwendung findet. (de)
- La fusión alcalina con sodio es un procedimiento que sirve para identificar los elementos presentes en una sustancia química. Basa en su conversión en compuestos iónicos solubles en agua y en la aplicación a éstos de pruebas específicas. (es)
- The sodium fusion test, or Lassaigne's test, is used in elemental analysis for the qualitative determination of the presence of foreign elements, namely halogens, nitrogen, and sulfur, in an organic compound. It was developed by J. L. Lassaigne. The test involves heating the sample with sodium metal, "fusing" it with the sample. A variety of techniques has been described. The "fused" sample is plunged into water, and the qualitative tests are performed on the resultant solution for the respective possible constituents. (en)
- O teste de Lassaigne é usado na análise elementar para a determinação qualitativa da presença de nitrogênio, enxofre e halogênios em um composto orgânico. Foi desenvolvido por Jean Louis Lassaigne. O teste envolve aquecer fortemente a amostra com sódio metálico, "fundindo-o" com a amostra. Uma variedade de técnicas foi descrita. A amostra "fundida" é mergulhada na água e os testes qualitativos usuais são realizados na solução resultante para os respectivos constituintes possíveis. (pt)
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| - Der Natrium-Aufschluss ist der Aufschluss meist organischer Substanzen mit elementarem Natrium unter starkem Erhitzen. Hierbei werden bestimmte Elemente der organischen Substanz in leicht lösliche Natriumsalze überführt. Die Untersuchung dieser Salze ermöglicht den Nachweis von Stickstoff, Schwefel und Halogenen in der ursprünglichen Substanz, weswegen der Natrium-Aufschluss zur Elementaranalyse in der qualitativen organischen Analyse Anwendung findet. (de)
- La fusión alcalina con sodio es un procedimiento que sirve para identificar los elementos presentes en una sustancia química. Basa en su conversión en compuestos iónicos solubles en agua y en la aplicación a éstos de pruebas específicas. (es)
- The sodium fusion test, or Lassaigne's test, is used in elemental analysis for the qualitative determination of the presence of foreign elements, namely halogens, nitrogen, and sulfur, in an organic compound. It was developed by J. L. Lassaigne. The test involves heating the sample with sodium metal, "fusing" it with the sample. A variety of techniques has been described. The "fused" sample is plunged into water, and the qualitative tests are performed on the resultant solution for the respective possible constituents. (en)
- O teste de Lassaigne é usado na análise elementar para a determinação qualitativa da presença de nitrogênio, enxofre e halogênios em um composto orgânico. Foi desenvolvido por Jean Louis Lassaigne. O teste envolve aquecer fortemente a amostra com sódio metálico, "fundindo-o" com a amostra. Uma variedade de técnicas foi descrita. A amostra "fundida" é mergulhada na água e os testes qualitativos usuais são realizados na solução resultante para os respectivos constituintes possíveis. (pt)
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