Optical Rotation

What is Optical Rotation?

A compound is said to be optically active when the linearly polarized light is being rotated when it is passing through it. The optical rotation is the angle through which the plane of polarization is rotated when polarized light passes through a layer of a liquid. Optical rotation is the effect which is determined by the concentration of chiral molecules and their molecular structure in a substance. Every optical active substance has its own specific rotation.

The formula of Optical Rotation

The formula of Optical Rotation

Applications of Optical rotation

  • Optical rotation is a function of time and it is used to determine kinetic reactions
  • This is also used to plot optical rotatory dispersion curves for a various range of wavelengths this helps in analyzing molecular structure
  • The optical rotation is measured on a layer of suitable thickness at the wavelength specified in the monograph

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