E507 is a food additive known as magnesium chloride. It is widely used in the food industry as a pH regulator and stabilizer.
Magnesium chloride as a food additive is low in calories and does not contain carbohydrates.
Magnesium chloride is commonly used in canned vegetables, seafood, cheeses, and other products.
In general, magnesium chloride is a safe and beneficial food additive that can be included in the diet on a keto diet.