Sodium sulfates
Score impact
0.00
points/product
Description
The food additive E514, known as sodium sulfates, is an inorganic compound used mainly as a stabilizer, acidity regulator, and texture agent in processed foods. Its origin can be natural (mineral deposits) or synthetic, obtained industrially by reacting sulfuric acid with sodium chloride (Mannheim process) or from mineral sources such as thenardite.
Chemically, E514 exists in two forms: anhydrous sodium sulfate (Na₂SO₄) and decahydrate sodium sulfate (Na₂SO₄·10H₂O, known as Glauber's salt). It is a white crystalline powder, odorless, with a salty-bitter taste, highly soluble in water, and stable under normal conditions. Its main function is to stabilize emulsions, adjust pH, and improve the texture of products such as processed cheese, sausages, sauces, and bakery products.
Historically, sodium sulfate has been used since ancient times as a laxative, but its approval as a food additive in the European Union dates back to 1995, following evaluations by EFSA and the Joint FAO/WHO Expert Committee on Food Additives (JECFA). EFSA established an Acceptable Daily Intake (ADI) of 0-15 mg/kg body weight (expressed as sulfur dioxide equivalent), although sodium sulfate itself has low toxicity. WHO also considers it safe at authorized doses.
Regarding food safety, E514 is classified as safe for the general population, with no significant adverse effects in chronic toxicity studies. Labeling must indicate its function and name or E code, according to Regulation (EU) No 1169/2011. In summary, E514 is a well-established additive with a favorable safety profile and is widely used in the European food industry.
E514 is used in various food categories as a stabilizer, acidity regulator, and texture agent. According to Regulation EC 1333/2008, it is authorized in: processed cheese (up to 4 g/kg), heat-treated sausages (up to 3 g/kg), emulsified sauces (up to 2 g/kg), fine bakery products (up to 1 g/kg), and milk substitutes (up to 0.5 g/kg).
In the Spanish market, it is found in processed cheese brands such as El Caserío or Kraft, in Frankfurt-type sausages from Campofrío, and in sauces like Hellmann's Mayonnaise. It is also used in industrial pastry products and ice cream mixes. Comparatively, the FDA classifies it as GRAS (Generally Recognized as Safe) without specific limits, while in Japan it is permitted with restrictions similar to the EU. The maximum authorized dose in the EU is 10 g/kg in some products, although actual amounts are usually lower.
It is important to note that E514 should not be confused with sulfites (E220-E228), which are preservatives and can cause allergies.
Documented side effects of E514 are scarce and generally mild. Sodium sulfate has an osmotic laxative effect when ingested in high doses (above 10-20 g), but the amounts used as a food additive are much lower (typically <1 g/day). Animal studies have not shown significant acute or chronic toxicity.
EFSA concluded that there is no evidence of carcinogenicity, genotoxicity, or reproductive toxicity. Sensitive populations, such as people with kidney failure, may have difficulty excreting excess sodium, but the additive's contribution is minimal compared to the diet. No interactions with medications are known. WHO supports its safety with an ADI of 0-15 mg/kg (as SO₂).
In conclusion, E514 is considered safe for the general population at authorized doses, with no significant adverse effects.
- Sodium sulfate
- Glauber's salt
- Thenardite
- Mirabilite
- Na2SO4
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