Gel Type Candle:
A candle where the primary fuel is a liquid such as mineral oil, terpene type chemicals, or modified hydrocarbons that are not mineral oil based which may or may not contain organic functional groups; it also contains a chemical agent to increase the viscosity (thicken) to a point where the candle has a quasi-rigid property.
(Extract from www.moyak.com/researcher/lifestyles/candles.html)
Does anyone know the answer to the following questions:
1. What kind of terpene type chemicals can be used to make Gel candles ?
2. Is Turpentine a type of terpene chemical ?
3. What kind of modified hydrocarbons (not mineral oil based) can be used to make Gel candles ?
4. What are organic functional groups & which ones can be used in making Gel Candles ?