Introduction:
| Symbol | : | Sr |
|---|---|---|
| Atomic number | : | 38 |
| Melting point | : | 777°C |
| Density (near r.t) | : | 2.64g/cm3 |
Chemical Composition:
| Strontium(Sr) | 99% Min |
| Calcium (Ca) | 0.2% Max |
| Barium(Ba) | 0.3% Max |
| Magnesium(Mg) | 0.1% Max |
| Aluminum (Al) | 0.1% Max |
| Iron (Fe) | 0.015% Max |
| Silicon (Si) | 0.10% Max |
| Sodium (Na) | 0.10% Max |
Characteristics:
- Strontium is a soft, silver-yellow, alkaline-earth metal.
- Strontium reacts vigorously with water and quickly tarnishes in air, so it must be stored out of contact with air and water.
- The metal forms a dark oxide layer when it is exposed to air.
Applications:
- Strontium is best known for the brilliant reds its salts give to fireworks and flares.
- It is also used in producing ferrite magnets and refining zinc.