https://nl.wikipedia.org/wiki/Propeen says kookpunt(=boilingpoint) = -47.69
http://nl.dbpedia.org/page/Propeen says ChemicalSubstance/boilingpoint = 320.84
This incorrect value is calculated using 273.15 + 47.69 = 320.84
The correct value is something like 225K which is 273.15 - 47.69 = 225.46
https://nl.wikipedia.org/wiki/Propeen says kookpunt(=boilingpoint) = -47.69 http://nl.dbpedia.org/page/Propeen says ChemicalSubstance/boilingpoint = 320.84 This incorrect value is calculated using 273.15 + 47.69 = 320.84 The correct value is something like 225K which is 273.15 - 47.69 = 225.46