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Calcium chloride dihydrate is a versatile chemical compound that has a wide range of applications in various industries. Here are some of its main uses:

1. Deicing and anti-icing: Calcium chloride dihydrate is commonly used as a deicing agent to melt ice and snow on roads, sidewalks, and runways. Its hygroscopic nature allows it to attract moisture from the air, generating heat and accelerating the melting process. It is also used as an anti-icing agent to prevent the formation of ice on surfaces before snowfall or freezing conditions.

2. Food industry: Calcium chloride dihydrate is used as a food additive for various purposes. It is commonly used as a firming agent for fruits and vegetables to maintain their texture and crispness. It is also used in cheese-making to improve curd formation and enhance the calcium content. Additionally, it is used as a coagulant in tofu production.

3. Concrete acceleration: Calcium chloride dihydrate is added to concrete mixtures to accelerate the setting and hardening process. It increases the rate of hydration, allowing for faster curing times and early strength development. This is particularly beneficial in colder climates or when construction schedules need to be expedited.

4. Desiccant: Calcium chloride dihydrate is utilized as a desiccant to remove moisture from the air in storage areas, packaging, and shipping containers. Its hygroscopic properties allow it to absorb excess moisture, preventing the growth of mold, mildew, and bacteria. It helps to preserve the quality and shelf life of products that are sensitive to moisture.

5. Medical applications: Calcium chloride dihydrate is used in various medical applications, such as in the treatment of hypocalcemia (low calcium levels in the blood). It can also be used as a cardiac arrest medication to increase heart contractions and blood pressure.

6. Oil and gas industry: Calcium chloride dihydrate is used in the oil and gas industry as a completion fluid to stabilize boreholes and prevent collapse. It is also used in drilling muds to increase density and reduce the risk of blowouts.

In summary, calcium chloride dihydrate finds applications in deicing, food industry, concrete acceleration, desiccation, medical applications, and the oil and gas industry. Its ability to melt ice, improve food preservation, accelerate concrete curing, absorb moisture, stabilize boreholes, and increase heart contractions make it valuable in several industries.