Calcium

Calcium (CAS 7440-70-2, EC 231-179-5, formula Ca) is an alkaline earth metal commercially known under names including Aquacal and Praval. It is classified under HS code 28051200 and falls within the Salts & Minerals category. No E-code designation applies to elemental calcium in this form.

In building and construction, calcium metal reacts with water and oxygen to act as a reducing agent and desiccant in specialty cement formulations. In metallurgy, it serves as a deoxidizer and desulfurizer during steel production, binding impurities that would otherwise compromise structural integrity. Agricultural applications rely on calcium to correct soil pH and support cell wall formation in crops.

Calcium is available in piece and powder grades, with purity levels suited to pharmaceutical (Ph.Eur.), food (FCC), and industrial applications. It falls under REACH regulation and requires compliant handling documentation. Packaging formats vary by grade and application requirement.