Differential scanning calorimetry determination of phase diagrams and water activities of aqueous carboxylic acid solutions

Extensive characterization of choline chloride and its solid–liquid equilibrium with water

“…Besides the well-description of the SLE of the aqueous solution of ethanol, this methodology has been successfully employed to describe the freezing points of ice in other binary aqueous solutions. 51–53…”

“…Besides the well-description of the SLE of the aqueous solution of ethanol, this methodology has been successfully employed to describe the freezing points of ice in other binary aqueous solutions. [51][52][53] Procedure 2 -differential scanning calorimetry. The SLE data of the aqueous solutions of mole fractions of ChCl between 0.100 and 0.901 were investigated using a differential scanning calorimeter (PerkinElmer model Pyris Diamond DSC) at a heating rate of 0.0833 K s À1 (5 K min À1 ) and a constant flow of high purity (99.999%) gaseous nitrogen as the protective gas.…”

Solid–Liquid Equilibrium for Binary Systems Containing Carboxylic Acids and Acetic Anhydride Obtained by Differential Scanning Calorimetry

“…As can be seen in this figure, all of compounds except acetic acid present a unique well-defined peak, which is related to their melting temperature. As for the thermogram of pure acetic acid, except for the melting peak of acetic acid, there is an unnoticeable transition at 243.15 K. This point is consistent with the eutectic point of acetic acid aqueous solution observed by Noshadi and Sadeghi . Therefore, the unusual thermogram may be attributed to the presence of water.…”

“…As for the thermogram of pure acetic acid, except for the melting peak of acetic acid, there is an unnoticeable transition at 243.15 K. This point is consistent with the eutectic point of acetic acid aqueous solution observed by Noshadi and Sadeghi. 15 Therefore, the unusual thermogram may be attributed to the presence of water. This speculation can also be verified in Table 2, there is a significant difference between the experimental data and those found in the literature because the presence of water can influence the thermodynamic properties of acetic acid significantly.…”

Solubility Measurement of Lauric, Palmitic, and Stearic Acids in Ethanol, n-Propanol, and 2-Propanol Using Differential Scanning Calorimetry

“…The melting temperature was determined from the peak temperature for all evaluated systems. ,,,− Furthermore, according to Xu et al and Ma et al, the peak temperature is independent of the mass of the sample, which contributes to reducing uncertainties un the measurements.…”