Differential thermal analysis and

The Sr-Cu system has been critically assessed. The most recent phase diagram, determined by combining differential thermal analysis and x-ray diffraction techniques, contains two intermediate compounds, both of which form in peritectic reactions, SrCu (588°C) and SrCu, (845°C) SrCu has also been prepared for independent structural analysis-. ... 

Thermal properties of several chlorinated phenols and derivatives were studied by differential thermal analysis and mass spectrometry and in bulk reactions. Conditions which might facilitate the formation of stable dioxins were emphasized. No two chlorinated phenols behaved alike. For a given compound the decomposition temperature and rate as well as the product distribution varied considerably with reaction conditions. The phenols themselves seem to pyro-lyze under equilibrium conditions slowly above 250°C. For their alkali salts the onset of decomposition is sharp and around 350°C. The reaction itself is exothermic. Preliminary results indicate that heavy ions such as cupric ion may decrease the decomposition temperature. 

XPD [18]. Similarly, mineral impurities in talc were analyzed by polarizing light microscopy, differential thermal analysis, and XPD [19]. It must be recognized, however, that small amounts of crystalline impurities (usually <0.5% w/w) may not be detected by XPD. In case of noncrystalline impurities, mrch higher concentrations may be nondetectable. 

There is no evidence for polymorphism from infrared spectroscopy and differential thermal analysis, and only inconclusive data from x-ray diffraction and microscopy studies. 

FIGURE 2.6. Typical Curves Obtained from (A) Constant Heating Rate Tests, (B) Isothermal Tests, ( C) Differential Thermal Analysis and (D) Adiabatic Calorimetry... 

P. J. Haines, M. Reading, F. W. Wilburn. Differential Thermal Analysis and Differential Scanning Calorimetry. InHandbookofThermal Analysis and Calorimetry, vol 1 Principles and Practice M. E. Brown, Ed. Elsevier Amsterdam, 1998 chapter 5. 

DIFFERENTIAL THERMAL ANALYSIS AND DIFFERENTIAL SCANNING CALORIMETRY... 

The second section will concentrate on methods of determining phase diagrams. The first part will examine non-isothermal methods, such as differential thermal analysis and cooling curve determinations, while the second will concentrate on isothermal methods, such as metallography, X-ray measurements, etc. The various limitations of both methods will be discussed and some novel techniques introduced. 

St CA 54, 15934(1960) (Differential thermal analysis and thermo gravimetry of some salts of Gu and related compounds) (Compares thermal stability, decon temp and 5-kg impact sensitivity of Picrates and Styph-natesof Hydrazine, aminoguanidine, N-tnethyl-guantdine, guanylurea, N-ethylguanidine and Gu)... 

C. Campbell, "Differential Thermal Analysis and Thermogravimetry Applied to Potassium Perchlorate-Aluminum-Barium Nitrate Mixtures , AnalChem 29, 306-10(1957) (See also PATR 2373 (Feb 1957) 4) W.J. Smothers 8r Y. 

Figure 6.6 Thermogram of HMX-fS using differential thermal analysis and thermogravimetric analysis...

Russian workers have continued to study hydrated salts of lanthanide ions. Some of these studies are of a rather detailed nature and a summary of some of the more recent work will be given here to indicate its general nature. There is considerable emphasis on phase studies, X-ray powder data, thermogravimetric and differential thermal analysis, and IR data. 

Thermal decompn of Tetryl was examined by Rogers (quoted in Ref 56) via DTA (differential thermal analysis) and thermal conductivity measurements. His results are shown in Fig 3. In the particular sample examined, melting started at 128° and rapid decompn at about 198°... 

Differential Thermal Analysis and Reaction Kinetics for nth Order Reactions , AnalChem 49 (1977), 998 51) K. Kishore, Thermal De-... 

Differential Thermal Analysis and Temperature Profile Analysis Studies on Pyrotechnic Delay Compositions , 1st ProcEurSympThermAnal, 446—47 (1976) CA 87,87214 (1977)... 

Thermal methods of analysis, including differential thermal analysis and differential scanning calorimetry (DSC)... 

Tan, K. H. (1977). Formation of metal-humic acid complexes by titration and their characterization by differential thermal analysis and infrared spectroscopy. Soil Biol. Biochem. 10,123-129. 

Differential Thermal Analysis and Differential Scanning Calorimetry 809... 

Laye, P.G. 2002. Differential thermal analysis and differential scanning calorimetry. In, Principles of Thermal Analysis and Calorimetry (P. J. Haines, ed.), pp. 55-93, Royal Society of Chemistry, Cambridge. 

Riga, A. T., Collins, R., and Mladchak, G. 1998. Oxidative Behavior of Polymers by Thermogravimetric Analysis, Differential Thermal Analysis and Pressure Differential Scanning Calorimetry. Thermochim. Acta, 324,135-149. 

Blumberg, A. A. Differential Thermal Analysis and Heterogenous Kinetics The Reaction of Vitreous Silica with Hydrofluoric Acid. J. Phys. Chem. 63, 1129 (1959). 

Evidence from differential thermal analysis and infrared spectroscopy... 

Kyoumen, M. Baba, Y. Kagemoto, A., "Determination of Consolute Temperature of Poly[Styrene-ran- (Butyl Methacrylate)] Solutions by Simultaneous Measurement of Differential Thermal Analysis and Laser Transmittance," Macromolecules, 23, 1085 (1990). 

Figure 2. Service drops in instrumental laboratory, (a) Gas and electrical supply for differential thermal analysis and (b) cooling water and electrical connections to a mass spectrometer.

The compositions of the products were determined by inductively coupled plasma (ICP) with a Perkin-Elmer plasma 40 emission spectrometer. Simultaneous differential thermal analysis and thermogravimetric (DTA-TG) curves were carried out by using Perkin-Elmer DTA-7000, TGA-7 PC series thermal analysis instrument in air with a heating rate of 10 °C /min. The infrared (IR) spectra were recorded on an Impact 410 IR spectrometer on samples pelletized with KBr powder. Valence states were determined by X-ray photoelectron spectroscopy (XPS). The XPS for powder samples fixed on double sided tapes was measured on an ESCA-LAB MKII X-ray photoelectron spectrometer. The Cis signal was used to correct the charge effects. 

---