YenzoWhat is E363 (succinic acid)?
Appendix 1 of Circular 24/2019/TT-BYT lists one function for succinic acid: acidity regulator.
E363Succinic acid
E363 is succinic acid, an organic acid also called butanedioic acid. In food it is used as an acidity regulator.
- Code
- E363 · INS 363
- Group
- Acidity regulator
In Vietnam✓ PermittedOn the list of permitted additives — Circular 24/2019, Appendix 1
Risk level on the Yenzo Scalevery low?Based on the Open Food Facts additives taxonomy
How E363 appears on labels
IngredientsIllustrative example
Wheat flour, vegetable oil, salt, sugar, acidity regulator (363), dried onion and garlic, pepper, natural colour (160a).
acidity regulator (363)acidity regulator 363E363INS 363On Vietnamese labels: Acid succinic
Succinic acid in food
Soups and brothsDipping sauces and similar productsCoffee, tea, herbal drinks and hot cereal drinksFlavoured water-based drink concentrates
Questions about succinic acid
Is succinic acid harmful?
In the United States, succinic acid is in Part 184 of Title 21 of the Code of Federal Regulations, the direct food substances that FDA affirmed as generally recognized as safe (GRAS). The rule describes it as a flavor enhancer and pH control agent, used at levels not exceeding good manufacturing practice. This is a US rule, not an EFSA evaluation.
Is Succinic acid permitted in Vietnam?
Yes. Succinic acid (INS 363) is listed in Appendix 1 of Circular 24/2019/TT-BYT, the list of additives permitted in food.
Other acidity regulators
E356Sodium adipatevery lowE357Potassium adipatevery lowE364Sodium succinatesvery lowE365Sodium fumaratevery lowE366Potassium fumaratevery lowE367Calcium fumaratevery low
See all acidity regulators →Updated 21 October 2026
Sources (4)
- Open Food Facts additives taxonomy (Yenzo's table cites no EFSA opinion for this code). Open Food Facts additives taxonomy, https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/additives.txt (entry en:e363)
- Thông tư 24/2019/TT-BYT (văn bản hợp nhất 09/VBHN-BYT), Phụ lục 2B: nhóm thực phẩm được phép dùng INS 363
- 21 CFR Part 184 (Direct Food Substances Affirmed as Generally Recognized as Safe), § 184.1091 Succinic acid (eCFR)
- Regulation (EC) No 1333/2008 on food additives (consolidated text of 18.08.2026): Article 16 and Annex II, Part E, category 13.1 (foods for infants and young children)