Calcium periodate is an inorganic compound with a specific capacity of 460 mAh per gram. It is synthesized from the chemical compound sodium sulphate, Na2SO4, and magnesium periodate, MgCl2. When combined with a zinc anode, the cathode’s cell voltage is approximately 1.4 V. In the laboratory, the calcium periodate produced with a Zn anode was found to have a capacity that was 50% greater than that of a conventional MnO2 cathode.

This substance is a member of the alkaline earth metals family, and is known to have numerous uses in both industrial and human health applications. For example, it serves as an alloying agent, an antiseptic, a pH adjuster, and an anticaking agent. As such, it is used as a preservative in food.

A more practical application of the compound is its use as a nutrient additive in dairy products. Specifically, nutrients are added to increase the level of calcium in milk, allowing for similar levels of calcium in milk as a non-fortified product. However, the regulation varies by country and the amount of calcium fortification may vary.

A calcium periodate may be available in submicron or nanopowder form. Some special dietary foods may also be fortified with calcium. The World Health Organization recommends that adults consume at least 80 mg of calcium per day. Soaking and boiling vegetables, for instance, may reduce their calcium content by up to five percent.

The proper use of the calcium periodate may be in the formulation of a special dietary supplement for children. These are meant to prevent deficiency.

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