What is E635?
E635 is Disodium 5'-ribonucleotides, a flavour enhancer. Same doubt as E631.
Also written as: INS 635, E-635, E 635, disodium ribonucleotides. INS is the international numbering system used outside Europe, including on labels in Asia, Australia and the Middle East.
What to do
Look for a halal logo, a "vegan" label, or a stated plant source on the pack. If none of these are present, you can contact the manufacturer and ask for the source.
Frequently asked questions
Is E635 halal?
E635 (Disodium 5'-ribonucleotides) is doubtful (mushbooh). Same doubt as E631.
What is E635 made from?
A mix of E627 and E631.
What is E635 used for?
E635 is used as a flavour enhancer, typically in crisps, instant noodles, stock cubes and ready meals.
What should I do if a product contains E635?
Look for a halal logo, a "vegan" label, or a stated plant source on the pack. If none of these are present, you can contact the manufacturer and ask for the source.
Related E-numbers
Last reviewed 2026-10-06. How we decide · Suggest a correction