Calcium
Description
Calcium (CAS 7440-70-2) is a reactive alkaline earth metal supplied in elemental form for industrial reduction, alloying, and chemical synthesis applications. As a powerful reducing agent and desulfurization reagent, it drives critical metallurgical processes.
In steelmaking and non-ferrous metallurgy, elemental calcium is used for desulfurization, deoxidation, and inclusion modification. This directly improves the mechanical properties and cleanliness of finished metal products across various industrial sectors.
The nuclear and specialty metals industry uses it as a reduction agent to produce high-purity titanium, uranium, and rare earth metals. This is achieved via metallothermic reduction, where high reactivity is essential for success.
In the chemical industry, it serves as a precursor for calcium hydride and other reactive calcium compounds used in organic synthesis. It is also frequently utilized in the production of specialized industrial desiccants.
Battery and energy storage research also draws on elemental calcium as an anode material in next-generation calcium-ion cell development. This emerging field relies on the specific electrochemical properties of the metal.
Elemental calcium is supplied as granules, lumps, turnings, and shot, with particle size selected to match handling requirements. Technical and high-purity grades are available, with purity levels typically ranging from 98% to 99.5%+.
Material is generally packaged under inert atmosphere or in sealed containers to preserve reactivity during storage and transit. This ensures the chemical integrity of the product remains intact until it reaches the final application.
Physical Properties
| Melting Point | 842 °C |
| Boiling Point | 1484 °C |
| Density | 1.54 g/cm³ @ Temp: 20 °C |
| Appearance | Calcium is a silvery-white metal when freshly cut, which tarnishes to a blue-gray color in air. It can also be found as a powder. |
| Color | Silver-white |
| Odor | Odorless |
| Form | pieces |
| Water Solubility | reacts with H2O, alcohols, dilute acids to evolve H2 [MER06] |
| pH | 0.5 (20°C in H2O) |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 28051200 |
| UN Number | 1401 |
| ADR Class | 4.3 |
| Packing Group | II |
| Storage Class | 4.3 - Hazardous materials which set free flammable gases upon contact with water |
| WGK (Germany) | 1 |
Documentation
Other Names
element 20|20Ca|Calcium, elemental|SY7Q814VUP|Calcium element|Blood Coagulation Factor IV|Factor IV|Praval
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