E451Triphosphates

E451 covers the triphosphates (sodium or potassium triphosphate), salts of phosphoric acid. Appendix 1 of Circular 24/2019/TT-BYT lists these functions: acidity regulator, emulsifier, emulsifying salt, humectant, sequestrant, stabilizer, thickener.

Did you know? EFSA calls salts of the formula M5P3O10 tripolyphosphates; E451 covers pentasodium triphosphate (451(i)) and pentapotassium triphosphate (451(ii)).

Code: E451 · INS 451
Group: Stabilizer, Humectant, Sequestrant, Emulsifying salt, Acidity regulator

In Vietnam✓ PermittedOn the list of permitted additives — Circular 24/2019, Appendix 1

Risk level on the Yenzo Scalelow?Based on EFSA's scientific assessment, 2019

EFSA (2019) found that intake in children can exceed the ADI. On the Yenzo Scale this finding does not raise the risk level by itself.

How much a day stays within the ADI?EFSA 2019 (group ADI for phosphates, as phosphorus): 40 mg/kg bw per day

Your weight: 65 kg

about 2.6 g a daythat is 2,600 mg

How E451 appears on labels

IngredientsIllustrative example

Wheat flour, vegetable oil, salt, sugar, stabilizer (451), dried onion and garlic, pepper, natural colour (160a).

stabilizer (451)stabilizer 451E451INS 451

INS sub-codes

INS 451(i)Pentasodium triphosphatenatri tripolyphosphat, sodium tripolyphosphate

INS 451(ii)Pentapotassium triphosphate

Sources: Thông tư 24/2019/TT-BYT (Bộ Y tế) quy định về quản lý và sử dụng phụ gia thực phẩm, Phụ lục 1; Codex CXG 36-1989, Class Names and the International Numbering System (INS)

Triphosphates in food

Processed cheese Dairy desserts Heat-treated meat and poultry Frozen fish and fishery products

Fresh and dried pasta and noodles

Breakfast cereals

Fine bakery wares Soup and broth cubes Dipping sauces and sauces

Questions about triphosphates

What is E451 (triphosphates)?

E451 covers the triphosphates, salts of phosphoric acid: pentasodium triphosphate (INS 451(i)) and pentapotassium triphosphate (INS 451(ii)). Appendix 1 of Circular 24/2019/TT-BYT lists these functions: acidity regulator, emulsifier, emulsifying salt, humectant, sequestrant, stabilizer, thickener.

Is triphosphates harmful?

In 2019 EFSA set a group ADI of 40 mg/kg body weight per day, expressed as phosphorus, for the phosphate additives (E338–E341, E343, E450–E452). EFSA noted that in one estimated scenario intake by infants, toddlers and other children exceeded this ADI.

Is E451 permitted in Vietnam?

Yes. Pentasodium triphosphate (INS 451(i)) and pentapotassium triphosphate (INS 451(ii)) are listed in Appendix 1 of Circular 24/2019/TT-BYT, the list of additives permitted in food.

Other stabilizers

E444Sucrose acetate isobutyratelow E445Glycerol esters of wood rosinslow E450Diphosphateslow E452Polyphosphateslow E459Beta-cyclodextrinlow E460Cellulosevery low

See all stabilizers →

Found in these products

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Ba rọi xông khói Le Gourmet (smoked bacon)Le Gourmet · sausages and processed meat

Mì Paldo Volcano vị gà (chicken ramen)Paldo · instant noodles

Mì xào Koreno Volcano vị gà (chicken stir-fried noodles)Paldo · instant noodles

Mì ramen Vifon vị nước tương (soy sauce ramen)Vifon · instant noodles Thịt xông khói hỗn hợp GO! (mixed smoked bacon)GO! · sausages and processed meat Mì ramen HO-YA vị gà (golden chicken ramen)HO-YA · instant noodles Chả ức gà Le Gourmet (chicken breast ham roll)Le Gourmet · sausages and processed meat

Updated 21 October 2026

How Yenzo scores

Sources (2)

Information only, not medical advice. The risk level is the additive's class in Yenzo's open scoring method, based on the cited source.