Calcium chloride (also calcium chloride) is a chloride of calcium, which in turn belongs to the group of alkaline earth metals. In the EU, it is approved as a food additive under the E number E509. B2B suppliers usually provide calcium chloride in pure form as colorless crystals. The salt is used in the food industry as a firming agent and flavor enhancer. E509 can also be used as a stabilizer in food processing, as it forms solid bonds with proteins and pectins. As a result, it is used, for example, in the manufacture of products such as tofu or artificial caviar. Other foods to which food manufacturers often add calcium chloride include cheese and cheese-containing products, dairy products, jams, canned fruits and isotonic sports drinks. To make them less susceptible to disease, fruits and vegetables are often treated with calcium chloride. E509 is not only used in food production, but also in laboratories, construction, medicine and marine aquariums.