Introduction & Comparison of Sodium Chloride & Calcium Chloride Salt Snow Removal

Salt is chemical known as sodium chloride. It is usually treated with some type of anti-caking agent after it comes from a mined rock that has been crushed that has been crushed and screened. This de-icing salt comes mixed at about three-eighths of an inch granule to fine crystals. It is surprisingly light at about a ton per cubic yard.

Another chemical used for snow removal is called calcium chloride. This chemical comes from natural brines. It can come in either flakes or pellets that are dry or in various concentrations of solutions.

There is always research being done on different chemical solutions that have less impact on the environment then that of sodium chloride and calcium chloride. Calcium magnesium acetate (CMA) is one alternative and in some cases special additives are used to reduce the corrosive prosperities within these de-icing agents. These can be more expensive however you may wish to consider them in unique or sensitive areas.

By lowering the freezing point of water, these de-icers are able to melt the snow. When a 23.3% concentrate of salt water freezes (at -6o) it allows the chloride to become useful for breaking down ice and snow. This is also the same for a 29.8% concentrate of calcium chloride which begins to freeze at (-67) respectively. Dry-icing must first dissolve into a brine solution before it can become effective. This can occur through moisture from the snow, road and/or sideway surface, or even from humidity (water vapor in the air). Unlike sodium chloride, calcium chloride is able to acquire moisture from the air directly. Even if the surface is below freezing there will be some degree of heat that will assist in the melting process.

There are several factors that affect the rate of snow melting using these de-icing agents which include the concentration of the chemical, surface temperatures, conditions of weather, width of application and time when the application of the chemical was used.

The amount is also a factor where if too much chemical solution is used then some of it will not dissolve at all and in a sense it will be wasted. Where too little is used of the solution then there may not be enough to lower the freezing point – both which will result in no clearing of the snow.

The temperature of the snow or ice covered surface determines the amount of chemicals and the various melting rates. When the temperature goes down the amount of de-icer required to eat away at any given quantity of ice or snow will significantly increase.

We hope you enjoyed this introductory article on the differences and factors affecting sodium chloride and calcium chloride snow and ice removal solutions. For more information please contact www.gpmcleaning.com.

Source: http://www.ArticlePros.com/author.php?GPME Cleaning Serivces

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