What You Need to Know
The process relies on the volatility of geraniol and related terpenoids, which are carried by steam at 80–90 °C and condensed at 100 °C. A reflux ratio of about 3:1 helps retain essential oils, while maintaining temperatures below 120 °C prevents oxidation of geraniol into off‑flavors.
The Science
Primary Reaction
Steam distillation of volatile rose petal oils