Sodium Ferrocyanide (E535)

Type of additive
(Glossary)
Acidity Regulators Anti-caking Agents
E NumberE535
Chemical FormulaNa4[Fe(CN)6]
Also Known AsYellow prussiate of soda (YPS)
Tetrasodium hexacyanoferrate
Gelbnatron
Ferrocyannatrium
sodium hexacyanoferrate(II)
Yellow blood salt

Purpose and Function

Sodium ferrocyanide is primarily used as an acidity regulator in food applications:

  • Acidity Regulator: It helps maintain pH levels in food products, contributing to flavor and preservation.
  • Anticaking Agent: Commonly used to prevent clumping in powdered foods and salts.
  • Improves Shelf Life: By stabilizing food products, sodium ferrocyanide helps enhance shelf life and prevent spoilage.

Potential Risks and Side Effects

Sodium ferrocyanide is generally regarded as safe for consumption in regulated amounts. However, some concerns include:

  • Toxicity in Excess: While considered safe in small amounts, excessive consumption could potentially lead to toxicity.
  • Allergic Reactions: Rarely, individuals may experience allergic reactions to sodium ferrocyanide, particularly those with sensitivities to cyanide compounds.
  • Contaminants: Sourcing from reputable suppliers is essential to minimize the risk of contaminants in food formulations.