# humic acid

> group of organic acids

**Wikidata**: [Q224896](https://www.wikidata.org/wiki/Q224896)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Humic_acid)  
**Source**: https://4ort.xyz/entity/humic-acid


## References

1. [ChemIDplus](https://chem.nlm.nih.gov/chemidplus/rn/1415-93-6)
2. Humic acids. ECHA Substance Infocard database
3. Integrated Authority File
4. Freebase Data Dumps. 2013
5. HUMIC ACIDS. CosIng database
6. National Library of Israel Names and Subjects Authority File