infobox chemical compound boilingpoint kelvin - celsius fails on negative celsius value

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infobox chemical compound boilingpoint kelvin - celsius fails on negative celsius value #64

Closed johanromme closed 9 years ago

johanromme commented 9 years ago

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