# fly ash

> residue of coal combustion

**Wikidata**: [Q236139](https://www.wikidata.org/wiki/Q236139)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Fly_ash)  
**Source**: https://4ort.xyz/entity/fly-ash


## References

1. Compendium of Chemical Terminology
2. [ChemIDplus](https://chem.nlm.nih.gov/chemidplus/rn/68131-74-8)
3. Ashes (residues). ECHA Substance Infocard database
4. Nuovo soggettario
5. Freebase Data Dumps. 2013
6. Medical Subject Headings
7. Quora
8. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)