E170 — Calcium Carbonate
White food coloring, acidity regulator, calcium supplement
Also known as: Chalk · Limestone · Calcium Carbonate
Permissible
Yes — Halal
Generally accepted as halal. This additive is typically derived from plant or synthetic sources and does not contain any prohibited ingredients according to Islamic dietary laws.
School of Thought Breakdown
Hanafi
Permitted
Maliki
Permitted
Shafi'i
Permitted
Hanbali
Permitted
Inorganic mineral - halal. Oyster shell calcium carbonate is also halal (shellfish are permitted). No concerns.
What to do with this product
Follow these steps in order — most products resolve at step 1 or 2
Safe to consume
E170 is permissible across all major schools of Islamic thought. No further verification is needed for this specific additive.
Still check the rest of the ingredients list
Other E-codes on the same label may have a different halal status. Use our database or scanner to verify each one.
You're all clear for this additive
E170 is permissible. Focus your label check on the other E-codes in this product — some may have different statuses.
Scan the full label →About E170
It is a inorganic chemical. Generally accepted as halal. This additive is typically derived from plant or synthetic sources and does not contain any prohibited ingredients according to Islamic dietary laws.
What is E170 made from?
- limestone (mineral)
- chalk (mineral)
- oyster shells (animal - some products)
Foods that commonly contain E170
Food Category Guide
E170 is common in chewing gum — see the full halal guide →
Always check the ingredient label on the specific product - manufacturers may change formulations.
Frequently Asked Questions
Is E170 (Calcium Carbonate (Chalk)) halal?
E170 (Calcium Carbonate (Chalk)) is classified as Halal. Generally accepted as halal. This additive is typically derived from plant or synthetic sources and does not contain any prohibited ingredients according to Islamic dietary laws.
What is E170 used for?
E170 is used as a white food coloring, acidity regulator, calcium supplement in food products.
What foods contain E170?
E170 (Calcium Carbonate (Chalk)) is commonly found in: white confectionery coatings, chewing gum, bread (calcium fortification), antacid tablets.
What is E170 made from?
E170 can be derived from the following sources: limestone (mineral), chalk (mineral), oyster shells (animal - some products).
What are the other names for E170?
E170 may appear on food labels as: Chalk, Limestone, Calcium Carbonate.
food colors — 51 E-codes: 20 Halal, 2 Haraam, 29 Mushbooh
Related E-Codes in food colors
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This information is for educational purposes only. For religious rulings, consult a qualified Islamic scholar or halal certification authority. E-code classifications may vary by source, manufacturing process, and school of thought.