permil

symbol: $‰$
synonyms: per mille, permille, promille
https://doi.org/10.1351/goldbook.15345
One part in a thousand parts.
Example: The mole fraction \(x = \pu{2.8E-3} = \pu{2.8 ‰}\).
Source:
PAC, 2008, 80, 233. (Glossary of terms related to solubility (IUPAC Recommendations 2008)) on page 258 [Terms] [Paper]
Citation: 'permil' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.15345 RIS BibTex EndNote
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