The Science Lab Facts And Figures
Only 10% of Stearic Acid is needed for 90% wax to perform its particular magic. It unmoulds more readily, which is a huge headache halved. Melting even a small amount of stearic acid in with powdered candle dyes helps the colour disperse evenly throughout the candle. It also creates the lovely pastel look to the colours. Adding 2% stearic acid to the paraffin wax reduces seepage if you’re using a heavy fragrance oil. But the most common reason to use the acid in candles is that it achieves a glossy finish and the hardening factor makes it take longer to burn and it magnifies the scent.
The hardening effect of stearic acid is especially wonderful for those preferring soy candles now that a vegetal source has become popular. Palm and coconut stearic are favourites although bear in mind that it will elevate the melting point of the soy, so keep an eye on things.
In short, stearic acid is a vital part of our lives, it’s in our food, our cosmetics and in the candles that create the ambience for all our special celebrations. Long live stearic acid!