E559 – Aluminium silicate
Anticaking agentDescription
Synthetic amorphous aluminium silicate
Notes
Aluminium silicate is a synthetic compound created by combining aluminum compounds with silica (a component found in sand and quartz) through industrial chemical processes. Unlike natural clays, this version is manufactured to have very specific properties – it's produced as an amorphous powder, meaning its particles don't have a regular crystal structure. This gives it excellent flow properties and makes it particularly effective at preventing other powdered substances from sticking together. This additive functions as an anticaking agent, working to keep powdered and granulated foods free-flowing and lump-free. You'll typically find it in table salt, seasoning blends, powdered soups, baking mixes, and other dry food products where clumping would be a problem. It works by absorbing moisture and creating a barrier between individual particles, preventing them from binding together into hard clumps. Aluminium silicate is entirely synthetic and manufactured in controlled industrial settings. It's suitable for both vegetarian and vegan diets, containing no animal-derived ingredients. The compound is generally recognized as safe when used in the small quantities typical for anticaking purposes, though some consumers prefer to limit their intake of aluminum-containing compounds. It's approved for use in food products across most countries, with regulated limits on the maximum amounts that can be used.