Phthalic Anhydride. III—The System: Naphthalene–Phthalic Anhydride

K. P. Monroe
1919 Journal of Industrial & Engineering Chemistry  
but if one plots on a large scale t h e reciprocals of t h e absolute freezing points against t h e logarithms of the mol. fractions of phthalic acid a straight line results, from which t h e melting point of pure phthalic acid is indicated t o be 2 0 8 O * 2'. This linear relation is predicted on t h e assumption t h a t the freezing-point curve conforms t o t h e law deduced for ideal systems, for it follows from Equation I in the-accompanying third article of this series t h a t
doi:10.1021/ie50120a008 fatcat:jrntt4tlejg4vkadjpjcgok6fu