... as buffer in foods, fermentation agent, improvers, emulsifier, nutrient, preservative of canned food Sodium acid pyrophosphateChemical name: Disodium dihydrogen pyrophosphate Molecular ... .005Water insoluble matter≤%1.0PH value3.5-4.5Uses: as buffer in foods, fermentation agent, improvers, emulsifier, nutrient, preservative ... breakage, no mixed with toxic matter. Disodium dihydrogen pyrophosphate