Fatty acid salts is is a chemical compound comprising salts of sodium, potassium, calcium and magnesium.

What it is used for and where it is used

Food

The E470 family of food additives includes :

• E470a (i): Sodium salts of fatty acids 
• E470a (ii): Potassium salts of fatty acids 
• E470a (iii): Calcium salts of fatty acids 
• E470b: Magnesium salts of fatty acids

They function as emulsifiers and stabilisers.