Precise determination of melting and boiling points by differential thermal analysis and differential scanning calorimetry

1973 ◽  
Vol 5 (4) ◽  
pp. 377-389 ◽  
Author(s):  
Edward M. Barrall
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Differential Thermal Analysis ◽  
Precise Determination ◽  
Scanning Calorimetry ◽  
Boiling Points

scholarly journals A thermal degradation study of Y and La methanesulfonates

2006 ◽  
Vol 71 (8-9) ◽  
pp. 905-915
Author(s):  
Moura de ◽  
Jivaldo Matos ◽  
Farias de
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Differential Thermal Analysis ◽  
Thermal Degradation ◽  
Degradation Process ◽  
Oxide Formation ◽  
Scanning Calorimetry ◽  
Degradation Study ◽  
Thermogravimetric Data ◽  
Thermal Degradation Process

The synthesis, characterization and thermal degradation of yttrium and lanthanum methanesulfonates is reported. The prepared salts were characterized by elemental analysis and infrared spectroscopy. The thermal degradation study was performed using thermogravimetry (TG), differential thermal analysis (DTA) and differential scanning calorimetry (DSC).Using the thermogravimetric data, a kinetic study of the dehydration ofY and Lamethanesulfonates was performed employing the Coats-Redfern and Zsak?methods. It was verified that under heating, yttrium and lanthanum methanesulfonates undergo three main processes: dehydration, thermal degradation and oxide formation. Furthermore, depending on the nature of the atmosphere, i.e., inert or oxidant, the thermal degradation process could be endothermic (N2) or exothermic (air).

scholarly journals Thermal stability and thermal decomposition of sucralose

2018 ◽  
Vol 39 (4) ◽  
pp. 21
Author(s):  
Gilbert Bannach ◽  
Rafael R. Almeida ◽  
Luis G. Lacerda ◽  
Egon Schnitzler ◽  
Massao Ionashiro
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Thermal Decomposition ◽  
Differential Thermal Analysis ◽  
Infrared Spectroscopy ◽  
Scanning Calorimetry ◽  
Thermoanalytical Techniques ◽  
Thermal Stability Of

Several papers have been described on the thermal stability of the sweetener, C12H19Cl3O8 (Sucralose). Nevertheless no study using thermoanalytical techniques was found in the literature. Simultaneous thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC) and infrared spectroscopy, have been used to study the thermal stability and thermal decomposition of sweetener.

Determination of Total and Free Water in Triple Superphosphate Fertilizers by Using Thermal Analysis

1985 ◽  
Vol 68 (4) ◽  
pp. 788-793
Author(s):  
Krystyna Kostyrko ◽  
Malgorzata Skoczylas ◽  
Andrzej Klee
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Free Water ◽  
Total Water ◽  
Triple Superphosphate ◽  
Scanning Calorimetry ◽  
Thermal Methods ◽  
Dehydration Processes ◽  
Derivatographic Analysis

Abstract Thermal analysis methods were used to study dehydration of triple superphosphate. A redrying procedure followed by Q-derivatographic analysis (under quasiisobaric and quasiisothermal conditions) as well as differential scanning calorimetry (DSC) was applied. Attempts were made to establish the correct drying-oven temperature for determination of water content, i.e., the temperature at which free or total water is removed from the fertilizer. Thermal decomposition of monocalcium orthophosphate monohydrate, the major component of triple superphosphate, was studied and a model was advanced for the reactions that occur during decomposition of this salt. The free water was completely released when superphosphate was heated at a constant temperature of 85°C. The total water was entirely released at 160°C. At 150°C, the process of removing the water of crystallization from the orthophosphate was disturbed by other concomitant dehydration processes which result in irreversible decomposition of this salt. The results obtained indicate that the thermal methods of analysis used are complementary.

scholarly journals Thermal Analysis of Organic Medicinals. I. Detection of the Molecular Compound Formation by the Differential Thermal Analysis and by the Differential Scanning Calorimetry

1969 ◽  
Vol 17 (1) ◽  
pp. 191-199 ◽  
Author(s):  
KEIJI SEKIGUCHI ◽  
IKUZO HIMURO ◽  
ISAMU HORIKOSHI ◽  
TOSHIKO TSUKADA ◽  
TAKAKO OKAMOTO ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Differential Thermal Analysis ◽  
Molecular Compound ◽  
Scanning Calorimetry ◽  
Compound Formation

Differential thermal analysis (DTA) and differential scanning calorimetry (DSC) at high pressures. Experimental techniques and selected results

1994 ◽  
Vol 238 ◽  
pp. 321-336 ◽  
Author(s):  
C. Schmidt ◽  
M. Rittmeier-Kettner ◽  
H. Becker ◽  
J. Ellert ◽  
R. Krombach ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Differential Thermal Analysis ◽  
High Pressures ◽  
Experimental Techniques ◽  
Scanning Calorimetry
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