Title: solvent volume fraction
Long Title: IUPAC Gold Book - solvent volume fraction
DOI: 10.1351/goldbook.15362
Status: current

Definition
For a solvent \(\ce{A}\), volume fraction of \(\ce{A}\) divided by the sum of the volume fractions of solvent in a solution containing both \(s\) solutes (\(i = 1, 2, \ldots, s\)) and \(p\) solvents (\(i = s + 1, s + 2, \ldots, p\)) \[\varphi_{{\rm{v}},{\ce{A}}} = \varphi_{\ce{A}}/\sum \limits_{i=s+1}^{p} \varphi_{i}\] where the summation is over the \(p\) solvent components only.

Note
Used to express solvent composition for a system containing a solute in a mixed solvent.

Related Term
- components: https://goldbook.iupac.org//terms/view/16268

Source
- PAC, 2008, 80, 233. 'Glossary of terms related to solubility (IUPAC Recommendations 2008)' on page 266 (https://doi.org/10.1351/pac200880020233)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/15362/html
- json: https://goldbook.iupac.org/terms/view/15362/json
- xml: https://goldbook.iupac.org/terms/view/15362/xml

Citation: Citation: 'solvent volume fraction' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.15362
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Accessed: 2026-07-27T20:17:47+00:00