What is E536?

Potassium ferrocyanide is the inorganic compound with formula K4[Fe(CN)6]·3H2O. It is the potassium salt of the coordination complex [Fe(CN)6]4−. E536 sits in the E500–E599 series, which in the EU classification mainly covers acidity regulators and anti-caking agents.

What is E536 used for?

E536 belongs to the anti-caking agents group. Anti-caking agents stop powders clumping, as in salt and spices.

Is E536 safe?

E536 is considered safe at the levels used in food and is approved for use in the EU. “Safe” means it is approved in the EU and regarded as safe at the levels used in food.

How E536 appears on labels

On food packaging you'll find E536 either as the number “E536” or by the name “Potassium ferrocyanide” in the ingredient list, often after its function. Ingredients are listed in descending order by weight, so an additive near the end is present only in small amounts.

Is E536 vegan?

Yes, E536 is suitable for vegans.