Aluminium potassium sulphate
What is Aluminium potassium sulphate?
Aluminium potassium sulphate is a double salt of aluminium sulphate and potassium sulphate. It is a white crystalline solid that occurs naturally as the mineral kalinite. It is typically manufactured by reacting aluminium hydroxide with sulphuric acid and potassium hydroxide.
Is Aluminium potassium sulphate vegan?
Aluminium potassium sulphate is not animal-derived. Products that contain it can still include other animal-derived ingredients, so check the full ingredient list.
Is Aluminium potassium sulphate gluten-free?
It is not related to gluten.
Is Aluminium potassium sulphate a major allergen?
Aluminium potassium sulphate is not derived from any of the 14 major allergens that UK law requires to be emphasised on food labels.
What is Aluminium potassium sulphate used for?
In food, it functions as a leavening agent, particularly in baking powders, where it reacts with bicarbonate of soda to produce carbon dioxide gas, causing doughs and batters to rise.
Is Aluminium potassium sulphate safe?
Aluminium potassium sulphate is an authorised food additive in Great Britain, listed on the Register of Food Additive Authorisations.
Why it's used
In food, it functions as a leavening agent, particularly in baking powders, where it reacts with bicarbonate of soda to produce carbon dioxide gas, causing doughs and batters to rise. It can also act as an acidity regulator and firming agent, and is found in some processed meats and noodles.
Health notes
Aluminium potassium sulphate is an authorised food additive in Great Britain, listed on the Register of Food Additive Authorisations. The European Food Safety Authority (EFSA) has evaluated it. JECFA has also evaluated it and set an acceptable daily intake. Concerns have been raised about aluminium intake from various sources, including food additives, but EFSA's evaluations consider the total dietary exposure to aluminium.
Regulatory status
Authorised in Great Britain (FSA register): England, Scotland, Wales. FSA register of authorised products
Allergen info
Aluminium potassium sulphate is not derived from any of the 14 major allergens that UK law requires to be emphasised on food labels. It is not related to gluten.
Foods that contain Aluminium potassium sulphate
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