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An improved and simplified procedure is described for determining the freezing points of hydrocarbons from time-temperature freezing and melting curves, and for calculating the purity whcn the freezing point for zero impurity is (a) known and (b) not previously known. A procedure for determining the cryoscopic constant is also described. I. II. III. IV. V. VI. VII. VIII.

Determination of the purity of hydrocarbons by measurement of freezing points