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This volume reviews the metal and ammonium formate solubility data published up to 1995. So far as the editors are aware, all the solubility data published during this period have been reviewed. Preference has been given to data published in numerical form. Data that appeared only in graphical form may not appear in this volume. In each section the metal atoms are arranged in the order (group) in which they appear in the Periodic Table. Metal formates are crystalline solids having some interesting chemical and physical properties. Several of these salts are important because they have nonlinear optical properties. Specific examples are: LiCHO2⋅H2O (3), NaCHO2 (4), Sr(CHO2)2, and Sr(CHO2)2⋅2H2O, Ba(CHO2)2, formates of Sc, Y and the rare earth elements having the general formula Me(CHO2)3⋅nH2O (where Me=Sc, Y, La, Ce, Pr, Nd, Sm…Lu) and some double salts and mixed salts such as NaCd(CHO2)3, BaCd(CHO2)4⋅2H2O and Li0.9Na0.1CHO2. Some metal formates have useful electric or magnetic characteristics. Thus, Cu(CH...

The polymerization kinetics of three epoxy adhesives HX-205, HX-206 and F-185 was defined by means of thermal analysis techniques (DSC and TMA). It was found that the liquid carboxy-terminated butadiene acrylonitriles (CTBN) and the solid rubber elastomer present in HX-206 and F-185 do not affect the phenomenological kinetics of the isothermal cure process by comparison with HX-205, which contains the same epoxy but no elastomer. It was also found that the isothermal (373 K) cure of these adhesives follows a two-range behaviour, i.e., the phenomelogical order of the cure kinetics is close to zero before and close to one after a “critical” time of cure. The trend of the glass transition temperature T g vs the cure degree α for HX-206 and F-185 was always below that for HX-205. T g did not approach the temperature of cure t c for α = 1 for elastomer-added adhesives, whereas HX-205 displayed an almost liear trend, with e.g. T g = 87° C for α. = 85%.

Thermoelectric power data provide a useful tool for the evaluation of the thermodynamic properties of ionic species of both solid and molten electrolytes in equilibrium with electrodes of thermocells; however a previous evaluation of the heat of transport of the mobile ions is necessary. This is the case of AgI. whose standard modifications have been investigated with silver electrode thermocells some years ago. The interpretation of the thermoelectric power change at the melting point allows one to recognize that the heat of transport of the silver ions in the high conductivity bcc modification is practically the same as in molten Agl. This result has been used to evaluate the molar heat of the silver ions in the bcc phase from the corresponding thermoelectric power data reported in the literature. The analysis of the thermoelectric power change at the transition point, from the wurtzitic to the bcc phase, as well as a more speculative interpretation of thermoelectric power data obtained with iodine electrode thermocells, allows one to evaluate the molar heat of the iodide ions in the bcc modification of AgI. The summation of the ionic contributions so computed reproduces rather satisfactorily the trend of AgI molar heat data obtained with adiabatic calorimetry.

Le pouvoir thermoelectrique des verres AgI: Ag 2 O•B 2 O 3 devient presqu'independant de T au voisinage de la T g correspondante. Quand les valeurs independantes de T sont portees en fonction de la composition exprimee en fraction d'equivalent AgI, la tendance qui en resulte est comparable a celles observees pour les binaires de sels fondus

Thermoelectric power determinations may significantly improve the characterization of the solid electrolytes, if a convenient procedure is followed to work out the experimental results. The peculiar physical properties of a solid electrolyte are generally due to a single fastly moving ionic species; therefore, thermocells assembled with proper electrodes reversible to the mobile ion allow to evaluate its partial molar entropy at various temperatures and, if side informations about the structure of the solid electrolyte are available, to compute other thermodynamic properties.

The correlation between the glass transition temperature,Tg, and the cure degree, α, of epoxy polymers has been analysed on the basis of an extension of the Vogel-Tamman-Fulcher equation for the viscosity of polymers and glasses.

The aim of this work is to show that isothermal and non-isothermal DSC investigations allow the temperature-time-transformation diagram of a polymer system to be drawn. DSC data can be worked out according to a simple model which supports the interpretation of the gelation process in terms of viscosity. It is seen that the degree of cure attained at the gelation point depends on the temperature of cure and that this crucial process is similar to the formation of a glass phase from a melt.

Thermoelectric power determinations allow one to evaluate some thermodynamic properties of ionic mobile species of solid electrolytes, provided that suitable reversible electrodes are employed in assembling the thermocell (1). The experimental data reported in literature (2) for have been employed here to evaluate the partial pressure of Na(v) in equilibrium with these solid electrolytes in the ranges 300–500 K and 340–580 K, respectively, and the Na entropy difference between in the range 340–500 K. The latter depends on in such a way as to suggest that a second order transition would occur in at about 450 K.