Bial's test
Chemical test / From Wikipedia, the free encyclopedia
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Bial's test is a chemical test for the presence of pentoses originally developed for the diagnosis of Pentosuria. It is named after Manfred Bial, a German physician. The components include orcinol, hydrochloric acid, and ferric chloride. A pentose, if present, will be dehydrated to form furfural which then reacts with the orcinol to generate a colored substance. The solution will turn bluish and a precipitate may form. The solution shows two absorption bands, one in the red between Fraunhofer lines B and C and the other near the D line.[1] An estimate of the relevant wavelengths can be made by referring to the Fraunhofer lines article.
Quick Facts Classification, Analytes ...
Classification | Colorimetric method |
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Analytes | Pentoses |
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