De-icing salt

In winter, de-icing salt is used primarily to ensure the safety of use of snow covered or frozen roads and so to improve the flow of transportation.
 
De-icing salt is a particularly effective mixture of fine and coarse salt grains with an anti-caking product (usually ferrocyanide) allowing the salt grains to remain separated from each others during prolonged storage.
 
The grain size of the salt used for de-icing is well studied for the specific winter conditions encountered. Thus, while fine grains provide immediate snow melting effect, larger grains guarantee a long-term effect required for thick layers of ice and snow.

Washed De-icing salt
Unwashed De-icing salt
Washed De-icing salt 0-4 mm
Unwashed De-icing salt 0-4 mm
Washed De-icing salt 0-5 mm
Unwashed De-icing salt 0-5 mm
Washed De-icing salt 0-6 mm
Unwashed De-icing salt 0-6 mm
Washed De-icing salt 0-12 mm
Unwashed De-icing salt 0-12 mm

Salt Type
Origin Ferrocyanide Method of analysis
Washed Salt Tunisia 75 – 100 ppm ASTM E534-98

TYPICAL VALUES CHIMICAL DATA
Sodium Chloride(NaCl) Calcium (Ca) Magnesium (Mg) Sulfate (SO4) Water (H2O) Insolubles
98 to 99.4% 0.01 to 0.2% 0.1 to 0.3% 0.3 to 0.8% 2 to 3% 0.1 to 0.2%


Salt Type
Origin Ferrocyanide Method of analysis
Unwashed Salt Tunisia 75 – 100 ppm ASTM E534-98

TYPICAL VALUES CHIMICAL DATA
Sodium Chloride(NaCl) Calcium (Ca) Magnesium (Mg) Sulfate (SO4) Water (H2O) Insolubles
97.2 to 98.5% 0.01 to 0.3% 0.2 to 0.4% 0.5 to 1% 2 to 3% 0.1 to 0.4%

TYPICAL VALUES PHYSICAL DATA
Boiling point Melting point PH of solution
1413°C 802°C 7
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