E555 – Potassium aluminium silicate
Anticaking agentDescription
Hydrated aluminosilicate of potassium; a white, odorless powder.
Notes
Potassium aluminum silicate is a white, odorless powder that can occur naturally as a mineral or be produced synthetically. It's made by combining potassium, aluminum, and silica (the same material found in sand and quartz) in specific proportions. The natural version is mined from mineral deposits, while the synthetic version is created through controlled chemical processes. This compound serves as an anticaking agent in food production, preventing powdered ingredients from sticking together and forming clumps. You'll typically encounter it in table salt, baking powder, powdered seasonings, and various dried food mixes where maintaining a free-flowing texture is essential for proper measuring and mixing. Whether natural or synthetic, this additive is suitable for vegetarian and vegan diets and doesn't present issues for most religious dietary requirements. Like other aluminum-containing additives, some consumers choose to limit their intake, though the quantities used in food are minimal and considered safe by regulatory agencies worldwide.