TY - JOUR
T1 - Thermophysical Study of Several Barbituric Acid Derivatives by Differential Scanning Calorimetry (DSC)
AU - Temprado, Manuel
AU - Roux, María Victoria
AU - Ros, Francisco
AU - Notario, Rafael
AU - Segura, Marta
AU - Chickos, James S.
PY - 2011/2/10
Y1 - 2011/2/10
N2 - The present study reports a differential scanning calorimetry (DSC) study of the barbituric acid derivatives: 1,3-dimethylbarbituric acid [CAS 769-42-6], 5,5-dimethylbarbituric acid [CAS 24448-94-0], 1,3-diethylbarbituric acid [CAS 32479-73-5], 1,3,5-trimethylbarbituric acid [CAS 7358-61-4], 1,5,5-trimethylbarbituric acid [CAS 702-47-6], and tetramethylbarbituric acid [CAS 13566-66-0] in the temperature interval from T = 268 K to their respective melting temperatures. Temperatures, enthalpies and entropies of fusion, and the heat capacities of the solid compounds as a function of temperature are reported.
AB - The present study reports a differential scanning calorimetry (DSC) study of the barbituric acid derivatives: 1,3-dimethylbarbituric acid [CAS 769-42-6], 5,5-dimethylbarbituric acid [CAS 24448-94-0], 1,3-diethylbarbituric acid [CAS 32479-73-5], 1,3,5-trimethylbarbituric acid [CAS 7358-61-4], 1,5,5-trimethylbarbituric acid [CAS 702-47-6], and tetramethylbarbituric acid [CAS 13566-66-0] in the temperature interval from T = 268 K to their respective melting temperatures. Temperatures, enthalpies and entropies of fusion, and the heat capacities of the solid compounds as a function of temperature are reported.
KW - Differential scanning calorimetry
KW - Entropy
KW - Heat capacity
KW - Phase transitions
KW - Reaction products
UR - http://pubs.acs.org/doi/full/10.1021/je1008944
U2 - 10.1021/je1008944
DO - 10.1021/je1008944
M3 - Article
VL - 56
JO - Journal of Chemical & Engineering Data
JF - Journal of Chemical & Engineering Data
ER -