Sodium Silicoaluminate (E554): What Is It, Uses and Side Effects

Sodium Silicoaluminate (E554): What Is It, Uses and Side Effects

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Sodium silicoaluminate or sodium aluminosilicate, an inorganic ingredient with low bulk density and high water absorption, used as an anticaking agent or free-flowing agent in food. E554 is its European food additive number.

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What Is Sodium Silicoaluminate?

It refers to a series of amorphous hydrated sodium aluminium silicates with varying proportions of Na2O, Al2O3 and SiO2. Its purpose is to prevent powdered food from caking, lumping, or aggregation and keep its free-flowing property.

How Is It Made? 

It is derived from the reaction of aluminum sulphate and sodium silicate followed by precipitation OR by reacting sodium metasilicate, metabisulfite, and aluminum sulfate through steam heating (). 

Properties

Appearance Fine white amorphous powder or beads.
Other names
  • Aluminum sodium silicate
  • Sodium aluminum silicate
  • Aluminosilicic acid, sodium salt
  • Silicic acid, aluminum sodium salt
  • Silicate, sodium alumino-
CAS number 1344-00-9
Chemical formula xSiO2 · yAl2O3 · zNa2O. Food grade complies with:

  • 66.0%< SiO2 (Silicon dioxide)
Sophie Feng

Sophie Feng

Sophia Feng, Marketing Manager of Grade Chemical, specializes in writing food chemical article, custom chemical article, industry chemical blog.

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