What is E304?
E304 is Ascorbyl palmitate, an antioxidant. The fatty acid is usually from palm oil but can come from animal fat. Halal if plant-based.
Also written as: INS 304, E-304, E 304. 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 E304 halal?
E304 (Ascorbyl palmitate) is doubtful (mushbooh). The fatty acid is usually from palm oil but can come from animal fat. Halal if plant-based.
What is E304 made from?
Vitamin C combined with palmitic acid, a fatty acid.
What is E304 used for?
E304 is used as an antioxidant, typically in oils, crisps, cereals and fatty foods.
What should I do if a product contains E304?
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