Multi‑functional Industrial Raw Material‑Calcium Chloride: Properties and Major Industrial Applications
Calcium chloride（CaCl_2 ）is a white inorganic salt crystal. Its two mainstream grades are 74% dihydrate calcium chloride and 94% anhydrous calcium chloride. It features prominent physicochemical properties including strong hygroscopicity, high water solubility, exothermic dissolution and extremely low freezing point of its aqueous solution. It serves as a highly versatile basic chemical raw material widely applied in municipal engineering, building materials, petroleum, environmental protection and chemical industries.
Road snow‑melting and de‑icing is its best‑known application. Compared with common industrial salt, calcium chloride keeps melting ice and snow at temperatures as low as ‑25℃. It is extensively adopted for winter snow removal on highways, airports and parking lots to mitigate icing hazards and guarantee traffic safety.
Calcium chloride acts as a dust suppressant for mines, storage yards and open‑air roads. Relying on its moisture‑absorbing capacity, it captures water vapour from air, wets dust particles and consolidates fugitive dust. This optimizes on‑site working conditions and mitigates dust pollution.
In the building‑materials sector, calcium chloride functions as an early‑strength and anti‑freezing admixture for concrete. Under low‑temperature construction conditions, it accelerates cement hydration and hardening, boosts early‑age concrete strength and depresses freezing point, so as to keep winter construction on schedule. It is also a core feedstock for magnesia fire‑proof boards and magnesite products.
For petroleum drilling, high‑purity granular anhydrous calcium chloride is formulated into drilling and completion fluids. It raises mud density, restrains shale swelling and stabilizes well walls to ensure downhole operation safety.
Within chemical processing and gas drying, anhydrous calcium chloride is a classic industrial desiccant. It dives various industrial gases such as nitrogen, oxygen and hydrogen; it is also applied for moisture‑proofing and dehumidification in containers and warehouses.
In addition, calcium chloride can be prepared into low‑temperature brine as a heat‑transfer medium for cold‑storage refrigeration systems. It removes fluoride ions and partial heavy‑metal ions in wastewater treatment processes. It works as a latex coagulant in the rubber industry, and as an inhibitor against spontaneous coal‑seam combustion in coal‑mining operations.
When placing orders, distinguish between 74% dihydrate calcium chloride and 94% anhydrous calcium chloride:
Dihydrate calcium chloride delivers good cost‑performance, and is mostly used for snow melting, dust suppression and refrigeration brine.
Anhydrous calcium chloride boasts superior hygroscopic power, suitable for scenarios demanding high purity such as desiccants and drilling fluids.
As an original manufacturer, we maintain ample spot inventory. Multiple physical forms including flakes, prilled pellets and powder are available, with packaging options of 25‑kg bags and jumbo bags.
