Here's a more detailed breakdown:
* Mixture: Fragrance oils are created by blending multiple individual fragrance chemicals (both natural and synthetic) together in a carrier oil (often mineral oil or a synthetic oil). This combination makes them a mixture rather than a pure substance.
* Not a Defined Chemical Class: They don't fit neatly into a standard chemical classification like alcohols, esters, or ketones, as they are composed of a variety of chemicals that can belong to many different chemical classes.
* Fragrance Industry Category: Within the fragrance industry, they are a category of raw materials used in perfumery, candle making, soap making, and other scent-related applications. They are distinct from essential oils (which are extracted directly from plants) although they can sometimes contain essential oils.