INS 526
salts and related compoundsCalcium Hydroxide
Halal
Is INS 526 (Calcium Hydroxide) halal?
Generally accepted as halal. Typically derived from plant or synthetic sources with no prohibited ingredients.
What to do
Safe to buy. This additive is permissible under Islamic dietary law.
Where is INS 526 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 526 on packaging from:
In the EU and UK, the same additive appears as E526. The ingredient, halal status, and sourcing considerations are identical — only the labelling system differs.
EU / UK equivalent: E526
INS 526 and E526 refer to the same food additive — Calcium Hydroxide. If you are checking a product purchased in the UK or Europe, look for E526 on the label instead.
See full E526 halal guide →About INS 526
Miscellaneous - alkalis
Sources / Derived From
- mineral (limestone + water)
Foods that commonly contain INS 526
Frequently Asked Questions
Is INS 526 (Calcium Hydroxide) halal?
INS 526 (Calcium Hydroxide) is classified as Halal. Generally accepted as halal. Typically derived from plant or synthetic sources with no prohibited ingredients.
What is INS 526 used for?
INS 526 is used as a firming agent and acidity regulator in food products.
What is the difference between INS 526 and E526?
INS 526 and E526 are the same additive — Calcium Hydroxide. INS numbers are used on food labels in Australia, New Zealand, Malaysia, Singapore, Indonesia, India, and GCC countries. The E-number system (E526) is used in EU and UK markets. The halal status is identical regardless of which label system is used.
What foods contain INS 526?
INS 526 (Calcium Hydroxide) is commonly found in: corn tortillas (nixtamalisation), pickles, sugar refining.
What is INS 526 made from?
INS 526 can be derived from: mineral (limestone + water).
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