Term: relative density, \(d\)
https://doi.org/10.1351/goldbook.R05262

Definition:
Ratio of density to a reference density, usually the density of water at 4°C; in the older literature this is called specific gravity.

Related Terms:
1) specific gravity (http://doi.org/10.1351/goldbook.S05799).

Source: Green Book, 2nd ed., p. 12 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)

Citation: 'relative density, \(d\)' 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.R05262

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