E551 — Silicon Dioxide
Anti-caking agent - prevents powders from clumping
Also known as: Silica · Silicon Dioxide · Amorphous Silica
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
Mineral - halal.
What to do with this product
Follow these steps in order — most products resolve at step 1 or 2
Safe to consume
E551 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
E551 is permissible. Focus your label check on the other E-codes in this product — some may have different statuses.
Scan the full label →About E551
Miscellaneous - silicon salts 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 E551 made from?
- mineral (quartz sand)
Foods that commonly contain E551
Food Category Guide
E551 is common in table salt — see the full halal guide →
Always check the ingredient label on the specific product - manufacturers may change formulations.
Frequently Asked Questions
Is E551 (Silicon Dioxide/Silica Salt) halal?
E551 (Silicon Dioxide/Silica Salt) 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 E551 used for?
E551 is used as a anti-caking agent - prevents powders from clumping in food products.
What foods contain E551?
E551 (Silicon Dioxide/Silica Salt) is commonly found in: table salt, powdered spices, dried soups, sugar, coffee whiteners.
What is E551 made from?
E551 can be derived from the following sources: mineral (quartz sand).
What are the other names for E551?
E551 may appear on food labels as: Silica, Silicon Dioxide, Amorphous Silica.
salts and related compounds — 52 E-codes: 47 Halal, 0 Haraam, 5 Mushbooh
Related E-Codes in salts and related compounds
Show 9 more salts and related compounds E-codes
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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.