Bayer’s test, known as the Bayer test or Bayer's reagent test, is a qualitative analytical test used to detect the presence of aldehydes. In this test, a specific reagent is added to a sample suspected of containing an aldehyde, and a color change or layer formation indicates a positive result.
When layers form in Bayer's test, it typically means that a reaction has occurred between the aldehyde and the reagent, often resulting in the formation of a complex or a new substance that has different solubility properties than the original substances in the test. The formation of distinct layers can indicate that the reaction products are not miscible or have different densities, suggesting a successful reaction.
Therefore, the observation of layers during Bayer's test generally signifies a positive result for the presence of aldehydes in the tested sample.