| Location | Main Location |
| Location Code | 204 Flammable 1 |
500 g of calcium metal is a silver-white, odorless granular metal that is soluble in water and liquid ammonia. It is a group 2 compound that can be used as a reducing agent when mixed with oxides of metals. Calcium is a soft, silvery-white metal that reacts with water and tarnishes quickly in air. It is used as a reducing agent to prepare other metals, such as uranium and thorium, and as an alloying agent for magnesium, copper, lead, beryllium, and aluminum alloys. Calcium is the fifth most abundant element in the Earth's crust and is found in leaves, teeth, bones, and shells. It is never found uncombined in nature, but can occur as fluorite, gypsum, and limestone.