Sodium Aluminium Phosphate (SALP) Also known as Sodium Aluminium Phosphate Acid What is Sodium Aluminium Phosphate? Sodium Aluminium Phosphate (SALP) is a food additive and a leavening acid. It is a white to colorless powder and is considered a slow reacting leavening acid with a neutralizing value of 100.1,2 In baking, SALP [...]