Key Hygroscopicity Curve

Key hygroscopicity curves for the various glycols (a) ethylene glycol (b) diethylene glycol and (c) dipropylene glycol. 

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Key hygroscopicity curve for ethyl ene glycol showing influence of vapor pressure of water at test temperature on amounts of moisture absorbed by ethylene glycol for system equilibrium at various temperatures and various absolute humidities. 

The effect of temperature on the moisture absorption of ethylene glycol for sy tern equilibrium at various relative humidities. Valuesplotted were calculated from those of the key hygroscopicity curve for ethylene glycol. 

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