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Ski Wax Hydrocarbon Vs. Low Fluoro Additive

By Jim Jansen

Hydrocarbon

Hydrocarbon, denoted as CH, is a hard wax that has a higher friction on snow than other waxes, preventing it from wearing down on hard snow. It is an economical wax used by ski racers for training and recreational purposes, notes Swix in its 2009 "Ski & Snowboard Preparation Guide."

Fluorocarbon

Low-fluoro additive is combined with hydrocarbon in what are called LF waxes, or low-fluorocarbon waxes, decreasing friction between the ski base and the snow. It is more expensive than hydrocarbon wax, and is used for training and racing, the Swix guide says.

Increasing Speed

Hydrocarbons contain carbon and hydrogen atoms arranged in chains of molecules. These molecules make up the most basic component in ski wax. Replacing the hydrogen atom in hydrocarbon wax with more electronegative--and therefore more water-repellent--elements produces a wax that is faster on snow.

Reducing Friction

Hydrocarbon becomes fluorocarbon when fluorine atoms replace some hydrogen atoms from hydrocarbon. Fluorine, the most electronegative element, is hydrophobic and does not react with water molecules, causing it to have very little friction on snow. The addition of fluorocarbon to a hydrocarbon wax provides it with these electronegative molecules, further reducing the friction between the ski base and snow.

Considerations

The amount of fluorine added to hydrocarbons varies in ski waxes between high and low, but a wax must contain 3 percent fluorine to benefit from its water repellent nature. Low-fluorocarbon wax contains the least fluoro additives, between 1 and 6 percent, of all fluorocarbon waxes. Wet snow conditions call for high-fluorocarbon wax, according to the Swix guide. Low-fluorocarbon wax, with its less water-repellent nature, reduces friction on harder snow.

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