E514i - Sodium sulphate

Origin

Sodium sulphate (Na₂SO₄) is an inorganic salt of sodium and sulfuric acid. It can occur naturally as the mineral thenardite or mirabilite (Glauber's salt). Industrially, it is produced as a byproduct of various chemical processes, such as the production of hydrochloric acid or rayon. Both natural and synthetic sources are used for food-grade sodium sulphate.

Usage

In the food industry, sodium sulphate is primarily used as a firming agent, acidity regulator, and carrier. It can help to maintain the texture of processed foods, control pH levels, and act as a bulking agent for powdered ingredients. It is also used in the production of some food additives. It is sometimes found in baked goods, processed vegetables, and certain beverages. Sodium sulphate is also used in the manufacturing of glass, detergents, and textiles.

Side Effects

Sodium sulphate is generally considered safe for consumption at levels typically used in food. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has not established a numerical Acceptable Daily Intake (ADI) for sodium sulphate, indicating that it poses a low risk at normal consumption levels. However, excessive consumption of sodium sulphate can have a laxative effect due to its osmotic properties, drawing water into the intestines. Individuals with sodium-sensitive hypertension or kidney problems should be mindful of their sodium intake from all sources, including sodium sulphate. There are no known significant allergic reactions associated with sodium sulphate.

Regulatory Status

Sodium sulphate (E514i) is permitted as a food additive in many countries, including those in the European Union and the United States. Regulations specify the conditions of use and maximum levels allowed in different food categories. In the EU, its use is governed by Regulation (EC) No 1333/2008 on food additives. In the United States, it is Generally Recognized As Safe (GRAS) under FDA regulations when used in accordance with good manufacturing practices.