How does the ethanol mass fraction affect the metastable zone width (MSZW) and interfacial energy of p-methoxybenzoic acid (PMBA)?

Label:chem

Topic
A study used the polythermal method to measure MSZW of PMBA in ethanol-water systems with varying ethanol mass fractions (0.6, 0.8, and 1.0).
Answer
MSZW and interfacial energy reach a maximum when the ethanol mass fraction is 0.8, resulting in the smallest crystal product size. This indicates PMBA needs to overcome a higher nucleation barrier at this composition.
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