Comparing E338 - Phosphoric acid vs E450III - Tetrasodium diphosphate
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Found in 4,566 products
Found in 1,336 products
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Interest over time for 4 keywords in U.S. during the last 10 years.
Interest over time for 6 keywords in U.S. during the last 10 years.
Popular questions
Is phosphoric acid bad for you?
At permitted food levels it’s considered safe (GRAS in the U.S.; EFSA sets a group ADI for phosphates of 40 mg/kg bw/day as phosphorus). Overconsumption—especially via acidic soft drinks—can contribute to dental enamel erosion, and high phosphate intakes may be a concern for people with kidney disease.
Is phosphoric acid a strong acid?
No—it's a weak, triprotic acid (pKa ≈ 2.15, 7.2, 12.3), though concentrated solutions are corrosive.
What is phosphoric acid used for?
In foods it’s used as an acidulant to add tartness and control pH (e.g., in colas) and as a sequestrant/antioxidant to stabilize color and flavor.
What does phosphoric acid do to the body?
It dissociates into phosphate ions, which are essential for bones and energy metabolism, while the acid load is buffered and excreted. High intakes from acidic drinks can erode tooth enamel, and excess phosphate may be problematic in kidney disease or with low calcium intake.
What is the formula for phosphoric acid?
H3PO4.
What is sodium acid pyrophosphate?
You may be thinking of sodium acid pyrophosphate (SAPP, E450i), but this entry covers tetrasodium diphosphate (E450iii), an inorganic phosphate salt used as a sequestrant, stabiliser/emulsifier, humectant and thickener. It helps bind metal ions, control pH and retain moisture in foods like processed meats and seafood.
Is sodium acid pyrophosphate bad for you?
At permitted food levels, tetrasodium diphosphate (E450iii)—a related phosphate—is considered safe by major regulators; EFSA sets a group ADI for phosphates of 40 mg/kg body weight/day (as phosphorus). Very high phosphate or sodium intakes can be a concern for people with kidney disease or on phosphate‑restricted diets.
Is sodium acid pyrophosphate gluten free?
Yes—tetrasodium diphosphate (E450iii) is an inorganic mineral salt and is gluten‑free. As with any ingredient, gluten risk would only come from cross‑contact during manufacturing, not the additive itself.
Is tetrasodium pyrophosphate safe?
Yes—when used within legal limits, tetrasodium diphosphate (E450iii) is permitted and considered safe by regulators (e.g., FDA, EFSA/JECFA), with EFSA’s group ADI for phosphates at 40 mg/kg body weight/day (as phosphorus). People with kidney disease or needing to limit phosphate/sodium should moderate intake.
Is sodium acid pyrophosphate safe?
While you mention SAPP, for the related tetrasodium diphosphate (E450iii) the consensus is that it’s safe at approved levels, under the same phosphate group ADI set by EFSA (40 mg/kg body weight/day as phosphorus). Those with kidney issues or on phosphate‑restricted diets should limit exposure.