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As far as I know Mag-chloride is still used in airport grounds maintenace but is no longer used in aircraft deicing, Non-Chlorides are used for aircraft deicing. I used various liquid deicers for several years in my snow removal buisness. I have used many products as well as porducing my own brine. The state of Indiana produces thier own sodum chloride brine as well as using mag/ag products. The home made brine can be as cheap as . 10 cents a gallon compared to $1 to $2 per gallon. The products sell retail for about $10 per gallon. These products are long lasting and usually applied before a storm, preventing the snow or ice from sticking to the surface (similar to greasing the cookie sheet) and alowing it to be easily plowed to the bare surface. Pre treating a surface requires aprox 50% less product to achive the same results being both better for the environment and the budget.
Mag chloride is a great canidate for early pre treating process as it is hygroscopic and therefore attracts moisture keeping it stuck to the road. Compared to soduim chloride which drys quickly and the dust is blown away from desired application areas. Pre applications are laid down in strips and use the trafic flow to spead the product.
Although pricier per gallon than just about anything else on the market, the agricultural deicers can be mixed with more common and much cheaper chemical deicers such as calcium chloride and magnesium chloride. This can bring down their freezing points, or — more importantly — inhibit the corrosiveness of the materials. That even goes for salt.
Certainly the best known agricultural deicer in this country, Ice Ban is the concentrated liquid residue of the fermentation and distillation of ethanol alcohol and the processing of other agricultural products such as corn and beet sugar. Natural Solutions Corporation introduced Ice Ban in 1995. Now, Caliber is 90% mag chloride and then it has a corrosion inhibitor and they say it performs enhancement [of the ] product that is derived of the agricultural byproduct added to it. ” Another product is Dow Armor which is calcium chloride mixed with the beet juice byproduct as a corrosion inhibitor.
The authority on the subject is a guy named Dale Keep. Known as the Ice Man, Keep was the long-time winter maintenance specialist at the Washington State Department of Transportation, one of the top agencies that continuously studies the performance and effects of anti-icing/deicing materials. Now Keep has his own training and consulting firm for winter operations, deicers, and associated technologies, called Ice & Snow Technologies, LLC and based in Walla Walla, Washington.
http://www.iceban.com
http://www.grainprocessing.com/horizon/geomeltminfo.htm
http://www.anti-icers.com/
http://www.roadsolutionsinc.com/