solvents
SOLVENTS
SOLVENTS: are liquids, virtually odorless and colorless, used in perfumery for the dilution of perfume oils. The most commonly-used solvent is ethyl alcohol. Some solvents also have fixative properties.
RESINOIDS
RESINOIDS: are extracts from resins or plant parts (except for the blossom). In addition to the essential oils, they contain ingredients such as the waxes and resins which are soluble in whatever solvent is being used in the particular process. In order to facilitate the use of resinoids, high-boiling, odorless solvents are often added to them. Resinoids often have a dark color and especially good fixing properties.
EXTRACTION
EXTRACTION: is the process of removing raw materials from plant and animal substances through the use of various solvents. Most of the valuable natural fragrance materials are produced in this manner.
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