UPDATED ON December 15th, 2018

E542 is the food additive number for bone phosphate which is produced from grinding animal bones. It is used in cosmetics including toothpaste. It is used as an anti-caking agent, an emulsifier, and as a source of phosphorous in dietary supplements. It is often made from pig bones and is not suitable for vegans, vegetarians, and those adhering to a kosher or halal diet. When you see an “E-number” like E542, it refers to an ingredient that has been approved by the European Union for use as a food additive.