https://doi.org/10.1351/goldbook.15340
Deprecated term that includes both a quantity and a unit. Replace by mole fraction expressed as percent.
Example: Deprecated: The solubility of \(\ce{B}\) is \(\pu{2.5 mole \%}\). Recommended: The solubility of \(\ce{B}\) is \(x_{\ce{B}} = \pu{0.025}\), or \(x_{\ce{B}} = \pu{2.5\%}\), or (especially in table headings and labels on axes of plots) \(\pu{100}\ x_{\ce{B}}\), with entry \(\pu{2.5}\) in table or on axis.