Origin
Chemically, E 524 can be obtained through two methods. First, sodium carbonate can react with calcium hydroxide or secondly, sodium reacts with water in an exothermic reaction. The end product is a white solid substance that dissolves well in water.
Usage
The food additive E 524 can be used without maximum quantity restrictions in all foods that are approved for use with additives. In the following foods, E 524 is among others used: spices, olives, leavened bakery products, jam, preserves, jelly, and cocoa mass.
Risks
So far, no ADI value (Acceptable Daily Intake) has been set for E 524, as the use of sodium hydroxide as an additive in food production is considered safe for the human organism.