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Two new equations (CSGC-ST1 and CSGC-ST2) for estimating surface tensions by applying a corresponding-states group-contribution method (CSGC) were proposed. The CSGC-ST1 equation needs only the normal boiling point data of substances to estimate accurately the surface tensions of pure substances at different temperatures. On the other hand, if the surface tension data at 20°C are available, the...
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