topofmurrayhill Posted March 27, 2010 Report Share Posted March 27, 2010 Heinz CD wicking is designed to perform well in viscous (thick) waxes, such as those composed of vegetable oil. Thus it's very popular for soy candles.All wicking is treated with chemical salts so that it can wick fuel without being itself consumed in the flame. The chemical treatment is not a coating. It's soaked into the wick, so you can't see it. However, without this chemical treatment, no candle wick would work properly.There is a special version of CD called CDN. Physically and visually, it's identical to CD. The only difference is that it's soaked with a different chemical solution to make it work properly in waxes that are acidic.What we mean by an acidic wax is one that has a high percentage of free fatty acids. An example of free fatty acid is the stearic acid that some people use in small amounts as a wax additive. However, some waxes (such as palm wax) contain free fatty acids in large amounts.German wicks such as CD and LX will not burn in such acidic waxes. The chemical treatments applied to those wicks are not sufficient to prevent them from being partially or mostly consumed in the flame. That's why Heinz offers a separate version of CD with a different chemical treatment.Soy wax does not require the special chemical treatment because it isn't an acidic wax. The fatty acids in soy wax are bound up with glycerol to form triglycerides, which is just another name for oil. We can look, for instance, at the technical data sheet for C-3 container wax at http://www.elevance.com/docs/technical/13C2030CT_TDS.pdf. The free fatty acids are listed as a maximum of one-tenth of one percent. This amount simply represents an allowance for some possible decomposition of the oil that the wax is made of. Quote Link to comment Share on other sites More sharing options...
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