Title: diffusion current constant
Long Title: IUPAC Gold Book - diffusion current constant
DOI: 10.1351/goldbook.D01723
Status: current

Definition
The empirical quantity defined by \[i=\frac{i_{\rm{d},l}}{c_{\rm{B}}\ m^{\frac{2}{3}}\ t_{1}^{\frac{1}{6}}}\] the equation where \(i_{\rm{d},l}\) = limiting diffusion current, \(c_{\rm{B}}\) = bulk concentration of the substance B whose reduction or oxidation is responsible for the wave in question, \(m\) = average rate of (mass) flow of mercury (or other liquid metal) and \(t_{1}\) = drop time.

Related Terms
- limiting diffusion current: https://goldbook.iupac.org//terms/view/L03534
- oxidation: https://goldbook.iupac.org//terms/view/O04362
- reduction: https://goldbook.iupac.org//terms/view/R05222

Source
- PAC, 1985, 57, 1491. 'Recommended terms, symbols, and definitions for electroanalytical chemistry (Recommendations 1985)' on page 1500 (https://doi.org/10.1351/pac198557101491)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/D01723/html
- json: https://goldbook.iupac.org/terms/view/D01723/json
- xml: https://goldbook.iupac.org/terms/view/D01723/xml

Citation: Citation: 'diffusion current constant' 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.D01723
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Accessed: 2026-04-20T09:50:12+00:00