Fragrance oil flash point is a term used in the candle making world. It is defined as the temperature at which a substance will ignite if it comes into contact with an open flame or spark. It’s the temperature at which the scent will start to evaporate. Before you start throwing oils into your candle wax, you should understand flash points.
Flash point is generally applicable to gel candles, but it is still important to be aware of them if you’re using alternative materials to create your candles. The flash point of a certain fragrance can determine the method of shipping, as some cannot be transported via air mail.
If you find your candles seem to have no scent when you burn them, even though you’ve added a bunch of oil, the flash point might be the reason why you can’t smell anything! When the temperature of the wax is over the recommended maximum flash point temperature, the oil will be evaporating as you are adding it. This means the candle will lose fragrance until it cools below the flash point of the fragrance oils, making the candle less scented.
Each fragrance oil will have a unique flash point, so it’s important to be aware of the flash points of your oils if you make or sell your own candles. Every fragrance oil will have the flashpoint on the label or bottle, and you can find this information online.
The flash point is for guidance. As long as you don’t add more than the recommended amount of fragrance oil to your candle wax, you don’t need to be too worried. You want to add the fragrance oils when the wax is slightly below the flash point temperature to ensure it blends well.
If you want to use more than one fragrance oil in one candle, you can work from the highest flash point. This can be difficult when figuring out the temperature required to melt the wax. You want the wax to be fully melted so that the fragrance oil disperses evenly throughout it and doesn’t congeal or clump together.
Once you have mixed your wax with the fragrance oil, try not to leave it sitting on a heat source for a prolonged period of time. Your candle will not burst into flames if this happens, but it’s better to be safe than sorry! Of course, make sure your wax and oils are not close to any open flames.
As long as you follow the safety guidelines whilst making your candles, and avoid adding too much fragrance oil to your wax, you should be fine. If you’re selling your candles, remember to add safety labels and symbols to indicate the hazards associated with the fragrances you’ve used.