Title: cumulative number-distribution function
Long Title: IUPAC Gold Book - cumulative number-distribution function
DOI: 10.1351/goldbook.12222
Status: current

Definition
Cumulative distribution function in which the relative amount of a portion of a substance with values of the random variable or variables less than or equal to a given value or given values is expressed in terms of mole fraction.

Source
- PAC, 2015, 87, 71. 'Definitions of terms relating to individual macromolecules, macromolecular assemblies, polymer solutions, and amorphous bulk polymers (IUPAC Recommendations 2014)' on page 86 (https://doi.org/10.1515/pac-2013-0201)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/12222/html
- json: https://goldbook.iupac.org/terms/view/12222/json
- xml: https://goldbook.iupac.org/terms/view/12222/xml

Citation: Citation: 'cumulative number-distribution function' 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.12222
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Accessed: 2026-05-09T01:47:57+00:00