---
id: "e_number"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["chemistry", "industry"]
country: ["EU"]
langs: ["common"]
quality: 80
url: "http://registry.apicrafter.io/datatype/e_number"
---

# E number (food additive) (`e_number`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Code of a food additive approved in the European Union: the letter E and three or four digits, sometimes with a letter or a roman numeral for a subclass, such as E330 for citric acid.

- Personal data (PII): no
- Categories: Chemistry (chemistry), Industry (industry)
- Countries: European Union (EU)
- Languages: Common to most languages (common)
- Classification: categorical

## Detection

Regular expression (Python `re`):

```
^E\d{3,4}[a-z]?(?:\([ivx]+\))?$
```

## Examples

- `E307a` — RRR-alpha-tocopherol
- `E621` — monosodium L-glutamate
- `E100` — curcumin

## Mappings

- wikidata: `P628`

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/E_number>
- wikidata: <https://www.wikidata.org/wiki/Property:P628>

## Quality

Score 80/100. Missing: negative example, translation, detector coverage.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/e_number.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/EU/chemistry/e_number.yaml>