The effect of reaction time in aerial oxidation of Assam coal on variation in moisture with wt% solubility in ethanolamine is presented. The effects of variation in helium density, specific energy, carboxyl acidity, and acid equivalent values on wt% solubilities of oxidized coal in ethanolamine are also highlighted. It is observed that progressive increase of oxidation time caused an increase in the moisture content and wt% solubility of oxidized coal in ethanolamine.The solubility of oxidized coal is found to correlate linearly with helium density, specific energy, acid equivalents, and carboxyl acidity on univariate basis with correlation coefficients of 0.88, 0.996, 0.992, and 0.995, respectively.