Why do some products say E330 and others say citric acid?

Both refer to the same substance. Manufacturers can choose to use either the E-number or the common name on their labels in the EU. Many brands prefer common names as they sound more familiar and less alarming to consumers.

Does a higher E-number mean it's less safe?

No. The E-number sequence is organizational, not a safety ranking. E300 (vitamin C) is extremely safe despite a 'lower' number, while some E400-E500 range additives have more concerns. Always look up the specific additive.

Can an additive lose its E-number?

Yes. If EFSA determines that an additive is no longer safe, it can be removed from the approved list. E171 (titanium dioxide) was banned in EU food products from August 2022 after EFSA concluded it could no longer be considered safe.

Are E-numbers used outside Europe?

The INS (International Numbering System) is the global equivalent, maintained by the Codex Alimentarius Commission. Most E-numbers correspond to an INS number. In the US, the FDA uses different names (FD&C dyes, GRAS substances) but the substances are often the same.

Understanding E-Numbers: What They Mean and Why They Exist

What Is an E-Number?

An E-number is a code assigned to food additives that have been approved for use within the European Union and European Free Trade Association (EFTA). The 'E' stands for Europe. When you see E330 on an ingredient label, that refers to citric acid — a safe, naturally occurring acid found in citrus fruits. The number simply provides a standardized shorthand for a potentially long chemical name. E-numbers aren't inherently good or bad. They are simply a labeling system. An E-number tells you that the substance has been evaluated by the European Food Safety Authority (EFSA) and deemed safe for the intended use. Without an E-number, a substance cannot legally be used as a food additive in EU countries.

The E-Number System: How It's Organized

E-numbers follow a logical structure that tells you what category of additive you're looking at: • E100–E199: Colors • E200–E299: Preservatives • E300–E399: Antioxidants and acidity regulators • E400–E499: Thickeners, stabilizers, and emulsifiers • E500–E599: pH regulators and anti-caking agents • E600–E699: Flavor enhancers • E700–E799: Antibiotics (rarely used) • E900–E999: Glazing agents, propellants, sweeteners • E1000+: Additional additives The INS (International Numbering System) maintained by Codex Alimentarius is similar — most E-numbers correspond to an INS number, making the system internationally comparable.

Are All E-Numbers Safe?

Not all E-numbers carry equal safety profiles. The system requires that any additive with an E-number has passed a safety review, but the level of scrutiny has varied over the decades, and new evidence can change assessments. EFSA conducts re-evaluations of older additives on an ongoing basis. Some E-numbers, like E300 (vitamin C) or E440 (pectin), are natural compounds with excellent safety records and even health benefits. Others, like E102 (tartrazine) or E171 (titanium dioxide), have raised significant concerns and been banned or restricted in multiple countries. The safest approach is to look up specific E-numbers rather than assuming all are either safe or dangerous.

E-Numbers Outside Europe

In the United States, the equivalent system is managed by the FDA. Common food dyes use the FD&C (Food, Drug and Cosmetic Act) naming system — for example, FD&C Yellow No. 5 is the American name for tartrazine (E102). The FDA also maintains a list of GRAS (Generally Recognized as Safe) substances. In Australia and New Zealand, Food Standards Australia New Zealand (FSANZ) regulates additives, using INS numbers similar to Europe. Many countries outside the EU use the Codex Alimentarius INS system directly. An important nuance: some substances approved in the EU are banned in the US, and vice versa. This doesn't always mean one system is more rigorous than the other — it often reflects differences in how agencies weigh evidence and apply the precautionary principle.

How to Read E-Numbers on Food Labels

Under EU law, food labels must list all additives by their category name and either their specific name or their E-number. So you might see 'Color: Tartrazine' or 'Color: E102' — both mean the same thing. Tips for decoding labels: 1. Look for the functional class (e.g., 'Preservative:', 'Emulsifier:') — this tells you what role the additive plays. 2. Use the E-number range to guess the category: E100s are colors, E200s are preservatives, etc. 3. For specific additives of concern to you (allergies, hyperactivity, etc.), search for the specific E-number on this site. 4. 'No artificial colors' or 'No artificial preservatives' claims are meaningful but don't mean a product is additive-free — it may still contain natural additives.