Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/100898
Type: Artigo de periódico
Title: Estimative By Dsc Data Of The Sublimation Enthalpies For Ethyleneurea And Propyleneurea: Some Empirical Correlations With Amides And Tioamides [estimativa Por Dsc Das Entalpias De Sublimação Da Etilenouréia E Da Propilenouréia: Algumas Correlações Empíricas Envolvendo Amidas E Tioamidas]
Author: De Farias R.F.
Abstract: By using DSC data, the enthaplies of sublimation for ethyleneurea and propyleneurea, are calculated as 84 and 89 kJ mol-1 respectively. Using the vaporization enthalpy values for dimethylethyleneurea and dimethylprophyleneurea, as obtained from literature, the empirical relation: Δcr g Hm o (1)/ Δcr g Hm o (2) = Δ1 g Hm o (1)/ Δ1 g Hm o(2) = constant, that relate sublimation or vaporization enthalpies of two different substances and of its methylated derivatives, is obtained. Correlations like that are found to another ureas and thioureas.
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Rights: aberto
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Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0001718254&partnerID=40&md5=e427b13c759dbedc284c16b4bd977f97
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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