# aqua regia

> mixture of nitric acid and hydrochloric acid, in a molar ratio of 1:3

**Wikidata**: [Q174670](https://www.wikidata.org/wiki/Q174670)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Aqua_regia)  
**Source**: https://4ort.xyz/entity/aqua-regia


## References

1. nitric acid hydrochloride. PubChem
2. Freebase Data Dumps. 2013
3. Nitric acid hydrochloride (1:1). ChemSpider
4. YSO-Wikidata mapping project
5. Quora
6. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)
7. UniChem