Wikidata:Property proposal/specific rotation
specific rotation
editOriginally proposed at Wikidata:Property proposal/Natural science
concentration
editOriginally proposed at Wikidata:Property proposal/Natural science
Description | qualifier: amount of substance in a mixture (solution) during measurement |
---|---|
Represents | concentration (Q3686031) |
Data type | Quantity |
Domain | mixture (Q169336) (but in fact used only as a qualifier in items being chemical substance (Q79529)) |
Allowed units | units of different concentrations: mass concentration (g/kg, g/g, ...), volume concentration (ml/l, ml/dl, ...), molar concentration (mol/l, ...), molal concentration (mol/kg, ...), normal concentration (mval/l, ...), and so on |
Motivation
editSpecific rotation property is useless without indication of the concentration, so these two proposals shouldn't be discussed separately. The 'concentration' property should be, however, limited to specific properties (like the specific rotation) to avoid putting values of many other properties for mixtures into items describing pure substances (i.e. specific rotation is an important property for chiral chemical compounds that is measured using solutions of a chiral compound in an achiral solvent; but many properties, e.g. density, may be measured for solutions and the values obtained for the solutions are properties of specific solutions, not pure chemical compounds). Wostr (talk) 16:50, 11 December 2018 (UTC)
Notified participants of WikiProject Chemistry
Discussion
edit- Support KaMan (talk) 04:33, 12 December 2018 (UTC)
- Support Both David (talk) 07:43, 12 December 2018 (UTC)
@ديفيد عادل وهبة خليل 2, Wostr, KaMan: Done: specific rotation (P6272). − Pintoch (talk) 23:57, 19 December 2018 (UTC)