# Hill system

> system of writing chemical formulas in the order C, H, then alphabetical

**Wikidata**: [Q900739](https://www.wikidata.org/wiki/Q900739)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hill_system)  
**Source**: https://4ort.xyz/entity/hill-system


## References

1. Freebase Data Dumps. 2013