---
id: "rtecsnumber"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["chemistry"]
langs: ["common"]
quality: 90
url: "http://registry.apicrafter.io/datatype/rtecsnumber"
---

# RTECS number (`rtecsnumber`)

> **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.

Identifier of a substance in the Registry of Toxic Effects of Chemical Substances (RTECS), a toxicity database started by the US National Institute for Occupational Safety and Health (NIOSH). It is two uppercase letters followed by seven digits.

- Personal data (PII): no
- Categories: Chemistry (chemistry)
- Countries: global
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^[A-Z]{2}\d{7}$
```

## Examples

- `KQ6300000` — Ethanol
- `DS1750000` — Beryllium
- `KQ630000` (invalid example) — Six digits instead of seven

## Mappings

- bioregistry: `rtecs`
- wikidata: `P657`

## Translations

- ru: Номер RTECS: Номер вещества в Реестре токсических эффектов химических веществ (RTECS).

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/Registry_of_Toxic_Effects_of_Chemical_Substances>
- wikidata: <https://www.wikidata.org/wiki/Property:P657>

## Quality

Score 90/100. Missing: detector coverage.

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