The Beilstein test is a simple qualitative chemical test for halides. It was developed by Friedrich Konrad Beilstein.
A copper wire is cleaned and heated in a Bunsen burner flame to form a coating ofcopper(II) oxide. It is then dipped in the sample to be tested and once again heated in a flame. A positive test is indicated by a green flame caused by the formation of a copper halide. The test does not detect fluorine/fluorides.
This test is no longer frequently used. One reason why it is not widely used is that it is possible to generate the highly toxic chloro-dioxins if the test material is apolychloroarene.
An alternative wet test for halide is the sodium fusion test — this test converts organic material to inorganic salts include the sodium halide. Addition of silver nitrate solution causes any halides to precipitate as the respective silver halide.
A Bunsen burner, named after Robert Bunsen, is a common piece of laboratory equipment that produces a single open gas flame, which is used for heating, sterilization, and combustion.
Friedrich Konrad Beilstein (17 February 1838 – 18 October 1906), Russian name "Бейльштейн, Фёдор Фёдорович", was a chemist and founder of the famous Handbuch der organischen Chemie (Handbook of Organic Chemistry). The first edition of this work, published in 1881, covered 1,500 compounds in 2,200 pages. This handbook is now known as the Beilstein database.
The sodium fusion test is used in elemental analysis for the qualitative determination of the presence of halogens,nitrogen and sulphur in a sample. It was developed by J. L. Lassaigne.
A copper wire is cleaned and heated in a Bunsen burner flame to form a coating ofcopper(II) oxide. It is then dipped in the sample to be tested and once again heated in a flame. A positive test is indicated by a green flame caused by the formation of a copper halide. The test does not detect fluorine/fluorides.
This test is no longer frequently used. One reason why it is not widely used is that it is possible to generate the highly toxic chloro-dioxins if the test material is apolychloroarene.
An alternative wet test for halide is the sodium fusion test — this test converts organic material to inorganic salts include the sodium halide. Addition of silver nitrate solution causes any halides to precipitate as the respective silver halide.
The sodium fusion test is used in elemental analysis for the qualitative determination of the presence of halogens,nitrogen and sulphur in a sample. It was developed by J. L. Lassaigne.
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