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Calcium Metal & Granules
Synonyms: calx
Designations:
Chemical Name: Calcium
Chemical Formula: Ca
Description:
The metallic element calcium has a silvery color and is harder than sodium but softer than aluminum. The pure element is never found in nature uncombined, rather commonly occurring in limestone (as CaCO3), gypsum (as CaSO4-H2O) and fluorite (as CaF2). Calcium, one of the alkaline earth elements, reacts in air to form a white coating of nitride and reacts with water, alcohol and dilute acids with evolution of hydrogen. Calcium is the fifth most abundant element in the earth's crust.
98%, 99%, 99.5%, 99.987%, and 99.99%
Shot, granules, wire, turnings, dendritic pieces, and ingot
| Atomic Number | 20 |
| Molecular Weight (g/mol.) | 40.08 |
| Apparent Density (g/cm3) | 1.55 |
| Thermal conductivity (cal/s-cm-°C) | .3 |
| Melting Point (°C) | 845 |
| Boiling Point (°C) | 1420 |
| Specific heat @25°C (cal/g-°C) | .0149 |
| Brinell Hardness | 16-18 |
| Tensile Strength (psi) | 6900 |
| Electronegativity (Paulings) | 1.0 |
| Covalent Radius (angstroms) | 1.74 |
| Crystallography | cubic structure, face centered |
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Refinement of lead alloys (especially for batteries), deoxidizing and cleaning steel, desulfurization and shape control of alumina and manganese sulfide inclusions, and a "getter" for residual gases in vacuum tubes
Packaged under argon
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