Solubility and solution thermodynamics of 4-Hydroxybenzaldehyde (cas 123-08-0) in twelve organic solvents from T = (278.15 to 318.15) K

Add time:09/05/2019    Source:sciencedirect.com

In this study, the solid-liquid equilibrium of 4-Hydroxybenzaldehyde (cas 123-08-0) in twelve solvents including methanol, ethanol, n-propanol, 1-butanol, isopropanol, ethyl acetate, 2-butanone, acetonitrile, toluene, N,N-dimethylformamide, 1,4-dioxane and acetone were constructed by the isothermal dissolution equilibrium method at a temperature range from (278.15 to 318.15) K under atmospheric pressure (101.2 kPa), and the solubility values of 4-hydroxybenzaldehyde in these solvents were determined by a high-performance liquid chromatography. The mole fraction solubility increased with increasing temperature and obeyed the following order from high to low in different solvents except for 1,4-dioxane: N,N-dimethylformamide > 2-butanone > acetone > ethyl acetate > (1-butanol, isopropanol) > n-propanol > ethanol > methanol > acetonitrile > toluene. The modified Apelblat equation, λh equation, Wilson model and NRTL model were used to correlate the solubility of 4-hydroxybenzaldehyde in different solvents. Results showed that the largest values of relative average deviation and root-mean-square deviation obtained with the four models were 2.66% and 78.9 × 10− 3, respectively. Moreover, the mixing properties including the mixing Gibbs energy, mixing enthalpy, mixing entropy, activity coefficient at infinitesimal concentration and reduced excess enthalpy were calculated. The solution process of 4-hydroxybenzaldehyde was spontaneous and favorable in the selected solvents. The solubility data and thermodynamic studies would be invoked as fundamental data and models regarding purification process of 4-hydroxybenzaldehyde and optimization conditions for its bromination process.

We also recommend Trading Suppliers and Manufacturers of 4-Hydroxybenzaldehyde (cas 123-08-0). Pls Click Website Link as below: cas 123-08-0 suppliers

Prev:Influence of the matrix composition on the volatility and sensory perception of 4-Ethylphenol (cas 123-07-9) and 4-ethylguaiacol in model wine solutions
Next:4-Hydroxybenzaldehyde (cas 123-08-0)-chitooligomers suppresses H2O2-induced oxidative damage in microglia BV-2 cells)