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Mayer's reagent is an alkaloidal precipitating reagent used for the detection of alkaloids in natural products. Mayer’s reagent is freshly prepared by dissolving a mixture of mercuric chloride (1.36 g) and of potassium iodide (5.00 g) in water (100.0 ml). Most alkaloids are precipitated from neutral or slightly acidic solution by Mayer’s reagent (potassiomercuric iodide solution) to give a cream coloured precipitate. This test was invented by the German Chemist, Julius Robert Von Mayer (1814–1878).

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  • Mayer's reagent (en)
  • Meyers reagens (sv)
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  • Mayer's reagent is an alkaloidal precipitating reagent used for the detection of alkaloids in natural products. Mayer’s reagent is freshly prepared by dissolving a mixture of mercuric chloride (1.36 g) and of potassium iodide (5.00 g) in water (100.0 ml). Most alkaloids are precipitated from neutral or slightly acidic solution by Mayer’s reagent (potassiomercuric iodide solution) to give a cream coloured precipitate. This test was invented by the German Chemist, Julius Robert Von Mayer (1814–1878). (en)
  • Meyers reagens är en lösning av 13,546 g kvicksilverklorid och 49,8 g kaliumjodid i 1 liter vatten och används som reagens för de flesta alkaloiderna. Dessa utfälls, i en svagt sur vätska, som gulvita amorfa fällningar vid tillsats av reagenset. Några av dessa övergår sedan i kristallinsk form. Bland de alkaloider, som ej utfälls av detta reagens, kan nämnas koffein, kolchicin och solanin. (sv)
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  • Mayer's reagent is an alkaloidal precipitating reagent used for the detection of alkaloids in natural products. Mayer’s reagent is freshly prepared by dissolving a mixture of mercuric chloride (1.36 g) and of potassium iodide (5.00 g) in water (100.0 ml). Most alkaloids are precipitated from neutral or slightly acidic solution by Mayer’s reagent (potassiomercuric iodide solution) to give a cream coloured precipitate. This test was invented by the German Chemist, Julius Robert Von Mayer (1814–1878). (en)
  • Meyers reagens är en lösning av 13,546 g kvicksilverklorid och 49,8 g kaliumjodid i 1 liter vatten och används som reagens för de flesta alkaloiderna. Dessa utfälls, i en svagt sur vätska, som gulvita amorfa fällningar vid tillsats av reagenset. Några av dessa övergår sedan i kristallinsk form. Bland de alkaloider, som ej utfälls av detta reagens, kan nämnas koffein, kolchicin och solanin. (sv)
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