E572 – Magnesium stearate
Anticaking agentDescription
Magnesium salt of stearic acid, a white, fine powder, used as an anti-caking agent, emulsifier, binder, and lubricant
Notes
Magnesium stearate is a fine white powder made by combining magnesium (a naturally occurring mineral) with stearic acid, which is a fatty acid that can be derived from either plant sources like palm oil or coconut oil, or from animal fats. The manufacturing process involves a chemical reaction that binds these two components together, creating a compound that has useful properties for food production. In foods, magnesium stearate serves three main purposes: it prevents ingredients from clumping together (anticaking), helps mix oil and water-based ingredients that normally wouldn't combine (emulsifier), and acts as a lubricant during manufacturing processes. You'll commonly find it in powdered drink mixes, seasoning blends, dietary supplements, and processed foods where smooth texture and consistent mixing are important. While magnesium stearate can be made from either plant or animal sources, most commercial versions today are derived from plant oils, making them suitable for vegetarians and vegans, though it's worth checking with manufacturers if this is a concern. The additive is considered safe by food safety authorities worldwide and is used in very small quantities. It's widely accepted across different dietary laws and doesn't contain common allergens.