Calcium Chloride Flakes by Warwick Salt is a high performance product. With its exothermic action (286 Btu/lb.), it melts ice in conditions as low as -40 °C, compared to conventional salt whose de-icing effectiveness is limited to a temperature of -10 °C. Calcium Chloride Flake has been the standard in the dust control spreading industry. It stands out from other dust control products due to its increased effectiveness and great versatility.