How is disodium pyrophosphate made? A guide to the manufacturing process
                                
                                
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                                    4 min read                                
                            
                                The U.S. FDA recognizes disodium pyrophosphate (SAPP) as generally safe when used within established limits, but how is disodium pyrophosphate made for use in food? The process involves a two-stage chemical synthesis, starting with phosphoric acid and a sodium source.