Sodium Aluminium Phosphate, also called SALP, E541, CAS no.10305-76-7, a family of sodium salts of aluminium phosphate, white powder. Sodium Aluminium Acid Phosphate(SALP) is a chemical used in food processing. It appears as a white powder, and has two forms, an acid form used in baking powder, and an alkaline form used as an emulsifier in processed cheese.

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Sodium Aluminium Phosphate powder Specification
ITEM STANDARD
ASSAY (NaAl3H14(PO4)84H2O) 95.0% MIN
APPEARANCE WHITE POWDER
ARSENIC( AS) 3PPM MAX
LOSS ON IGNITION 19.5-21.0% MAX
Pb (PPM) 10 MAX
MERCURY (PPM) 1 MAX
HEAVY METAL( PB) 40PPM MAX
FLUORID( PPM) 25 MAX