What are the uses of dihydrate calcium chloride?

1. Snow melting agent: Calcium chloride dihydrate can quickly dissolve into Ca2+and 2Cl - ions at low temperatures, which can combine with ice and snow to lower the freezing temperature. The dissolved calcium ions can prevent ice from forming on the ground, thus playing a role in snow melting. Because it can effectively dissolve ice and snow, it is often used for snow removal operations on municipal roads, airport runways, parking lots, and other places.

2. Phthalic acid production: Calcium chloride dihydrate can react with phthalic acid to produce calcium phthalate dihydrate, which is an important organic compound widely used as a plastic material (such as polyester fiber, polyester film) and dye intermediate, as well as a synthetic polymer material and pharmaceutical intermediate.

3. Dustproof agent: Due to its hygroscopicity, calcium chloride dihydrate can combine with water vapor in the air to form water, thereby reducing the humidity in the air. Therefore, it is often used as a dust inhibitor and can be sprayed on roads, quarries, railways, ports, etc. to reduce flying dust and improve the working environment.

4. Calcium fertilizer: As a compound of calcium, dihydrate calcium chloride can be used as a raw material for plant calcium fertilizer, and can be used as a soil amendment and plant growth regulator. It can not only supplement calcium elements for plants, promote plant growth and development, but also increase soil fertility and improve soil structure.

5. Electroplating industry: Dihydrate calcium chloride can be used as one of the components of electroplating solution. During the electroplating process, calcium ions can combine with metal ions on the cathode to form a metal deposition layer, thereby achieving electroplating of objects.

6. Textile industry: Calcium chloride dihydrate is often used as a chlorinating and bleaching agent in textile printing and dyeing processes. It can remove pigments and impurities from textiles and give them good softness and hand feel,

In addition, dihydrate calcium chloride can also be used as a food additive, smoke agent, logging fluid in petroleum exploration, water treatment agent, and raw material for preparing other compounds.

Overall, calcium chloride dihydrate is a multifunctional compound with broad application prospects in multiple fields.