# ISO 80000-9:2009 Quantities and units—Part 9: Physical chemistry and molecular physics

> published ISO standard

**Wikidata**: [Q26711940](https://www.wikidata.org/wiki/Q26711940)  
**Source**: https://4ort.xyz/entity/iso-80000-9-2009-quantities-and-units-part-9-physical-chemistry-and-molecular-physics