INS 366
Food Acid - Potassium salt of fumaric acid (E297)Potassium Fumarate
Mushbooh (Questionable)
Is INS 366 (Potassium Fumarate) halal?
Source-dependent. May be derived from halal (plant/synthetic) or haram (animal) sources. Verify with the manufacturer or look for halal certification.
What to do
Don't assume. Ask the brand for halal certification or source information.
Where is INS 366 used?
INS (International Numbering System) codes are maintained by the Codex Alimentarius Commission and used on food labels in many countries outside the EU. You will commonly see INS 366 on packaging from:
In the EU and UK, the same additive appears as E366. The ingredient, halal status, and sourcing considerations are identical — only the labelling system differs.
EU / UK equivalent: E366
INS 366 and E366 refer to the same food additive — Potassium Fumarate. If you are checking a product purchased in the UK or Europe, look for E366 on the label instead.
See full E366 halal guide →About INS 366
Halal
⚠️ Verification Required
The halal status of INS 366 depends on its source. Always check for halal certification on the product packaging or contact the manufacturer directly.
Sources / Derived From
- fumaric acid + potassium (synthetic)
Foods that commonly contain INS 366
Frequently Asked Questions
Is INS 366 (Potassium Fumarate) halal?
INS 366 (Potassium Fumarate) is classified as Mushbooh (Questionable). Source-dependent. May be derived from halal (plant/synthetic) or haram (animal) sources. Verify with the manufacturer or look for halal certification.
What is INS 366 used for?
INS 366 is used as a acidity regulator in food products.
What is the difference between INS 366 and E366?
INS 366 and E366 are the same additive — Potassium Fumarate. INS numbers are used on food labels in Australia, New Zealand, Malaysia, Singapore, Indonesia, India, and GCC countries. The E-number system (E366) is used in EU and UK markets. The halal status is identical regardless of which label system is used.
What foods contain INS 366?
INS 366 (Potassium Fumarate) is commonly found in: some processed foods.
What is INS 366 made from?
INS 366 can be derived from: fumaric acid + potassium (synthetic).
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