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. |
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| CAS number | 1344-00-9 |
| Chemical formula | xSiO2 · yAl2O3 · zNa2O. Food grade complies with:
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