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An essential oil is a concentrated hydrophobic liquid containing volatile (easily evaporated at normal temperatures) chemical compounds from plants.Essential oils are also known as volatile oils, ethereal oils, aetheroleum, or simply as the oil of the plant from which they were extracted, such as oil of clove.
other damascones (under 1%) beta-ionone (under 1%) rose oxide (under 1%) Beta-damascenone's presence is considered as the marker for the quality of rose oil. Even though these compounds usually exist in less than 1% quantity of rose oil, they make up for slightly more than 90% of the odor content due to their low odor detection thresholds. [8]