Monosodium phosphate
Function: Emulsifier
E339I is the European food-additive number for Monosodium phosphate, an emulsifier — helps ingredients that normally separate, like oil and water, stay mixed. MONOSODIUM PHOSPHATE, also known as monobasic sodium phosphate and sodium dihydrogen phosphate, is an inorganic compound of sodium with a dihydrogen phosphate -H2PO4−- anion.
What is E339I used for?
Monosodium phosphate (E339I) is an emulsifier — helps ingredients that normally separate, like oil and water, stay mixed. It is added during food production for a technological purpose rather than for nutrition. See all emulsifiers (E-numbers).
Is E339I safe or restricted?
E339I faces restrictions under EU rules on how, where, or in what quantities it may be used. Forkin classifies it as “Restricted use” and does not make health claims. See the methodology for how regulatory levels are assigned, or the guide to how EU additives are approved, re-evaluated and banned.
Is E339I vegan or vegetarian?
Monosodium phosphate (E339I) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians.
The production source can vary between manufacturers — the Forkin app shows the verified vegan and vegetarian status per product. Always read the label for allergens.
Which foods contain E339I?
E339I appears in 385 of the 4.7 million products in Forkin's catalogue — most often in cakes, sausages and crackers.
- Cakes16
- Sausages14
- Crackers12
- Instant Noodles8
- Chocolate Candy8
- Pork (General)8
- Pastry8
- Potato Chips7
Often appears alongside
Additives most frequently found in the same ingredient lists as E339I across the catalogue.
Counts reflect Forkin's independently enriched product catalogue and update as new products are added — they are not a market-share statistic.
Frequently asked questions about E339I
- What is E339I?
- E339I is the E-number for Monosodium phosphate, an emulsifier — helps ingredients that normally separate, like oil and water, stay mixed. MONOSODIUM PHOSPHATE, also known as monobasic sodium phosphate and sodium dihydrogen phosphate, is an inorganic compound of sodium with a dihydrogen phosphate -H2PO4−- anion.
- What is E339I used for?
- Monosodium phosphate (E339I) is an emulsifier — helps ingredients that normally separate, like oil and water, stay mixed. Manufacturers add it during processing rather than for nutrition. The Forkin app shows which products in your scan history actually contain it.
- Which foods contain E339I?
- E339I appears in 385 of the 4.7 million products in Forkin's catalogue — most often in cakes, sausages and crackers. Scan any barcode with the Forkin app to see instantly whether a specific product contains it.
- Is E339I vegan or vegetarian?
- Monosodium phosphate (E339I) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians. The Forkin app shows the verified vegan and vegetarian status per product, since the source can vary between manufacturers.
- Is E339I safe, and is it banned anywhere?
- E339I faces restrictions under EU rules on how, where, or in what quantities it may be used. Forkin classifies it as "Restricted use" and does not make health claims — see the methodology page for how regulatory levels are assigned, and the Forkin app for the full profile, including acceptable daily intake (ADI) and restrictions by country.
See the full profile in Forkin
The Forkin app surfaces the full regulatory profile of E339I — acceptable daily intake (ADI), restrictions by country, vegan/vegetarian status, alternative names, and which products in your scan history contain it. See view pricing.