A new look at the thermal properties of copper sulfate 5-hydrate
1970; Elsevier BV; Volume: 1; Issue: 5 Linguagem: Inglês
10.1016/0040-6031(70)85012-2
ISSN1872-762X
Autores Tópico(s)Crystallography and molecular interactions
ResumoThe dehydration of CuSO4 · 5H2O was studied by sealed and open-tube DTA, QDTA, and by microreflectance and transmittance spectroscopy. By use of sealed-tube DTA, only two endothermic peaks were observed during the dehydration process; the first peak was due to the transition: while the second was probably the transition of the From QDTA, the heat of reaction of the first peak was found to be 12.9±0.6 kcal/mole; for the second peak a ΔH of 6.3±0.3 kcal/mole was found. The microreflectance and transmittance curves of single crystals of CuSO4 · 5H2O also showed the formation of the 3-hydrate at elevated temperatures.
Referência(s)