This standard specifies the method for determining the optical rotation of fragrances (essential oils, isolated and synthetic fragrances). This standard is applicable to the determination of the optical rotation of spice products. When the spice product to be tested is solid, semi-solid, or has a high viscosity and dark color at the measured temperature, it should be prepared into a solution first. The concentration of the prepared solution And the solvent used will be stipulated in the relevant product standard.
GB/T 14454.5-1993 history
2008GB/T 14454.5-2008 Fragrance/Flavor substances.Determination of optical rotation