Chemistry
Coral calcium is composed primarily of calcium carbonate (CaCO3), with small amounts of magnesium and other trace minerals. Calcium carbonate from coral is similar to calcium carbonate from other sources, with varying amounts of trace minerals. Much attention has been given to calcium carbonate's ability to change the pH (or alkalinity) of water-based solutions to which it is added. With respect to pH and alkalinity, the calcium component is less important than the carbonate component, which is chemically similar to the bicarbonate in baking soda. Coral calcium is a source of calcium, which is an essential mineral for human life. Coral has a chemical structure that is very similar to the composition of human bone and is sometimes used as material in bone grafts.
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