Hanglaiwan subbituminous coal (HSBC) was subjected to solvent extraction (SE) with an isometric carbon disulfide/acetone mixed solvent (IMCDSAMS) to obtain a residue (R-SE ). Thermal dissolution (TD) of R-SE was conducted in cyclohexane (CH) and ethanol (E), respectively, to afford residues R-CH and R-E. Both HSBC and the residues (Rs) were analyzed with multiple tools to understand their physicochemical properties. X-ray photoelectron spectroscopic analysis shows that >C-C<, >C-H, >C-OH, and >C-O- moieties are abundant in HSBC and Rs, while pyrrolic nitrogen (N-P(II)) and sulfone are the main forms in which nitrogen- and sulfur-containing species exist, respectively, in the samples. According to the ultimate and Fourier transform infrared semiquantitative analyses, the aliphatic moiety-rich species obtained from the SE of HSBC with IMCDSAMS and contents of aliphatic moiety (AM)-rich species (AMRSs) obtained from the SE of HSBC with IMCDSAMS and AMRSs from the TD of R-SE in CH are higher than those of aromatic ring (AR)-rich species (ARRSs). The ethylation of some ARs in R sE occurred during the TD of R-SE in E. In addition, SE and TD increase the aromaticity of the resulting Rs. The mass loss (ML) decreases in the order of HSBC > R-SE > R-CH > R-E in the temperature range of 30-400 degrees C, and the characteristic temperatures and maximum ML rates of the Rs are obviously higher than those of HSBC in the temperature range of 600-800 degrees C. These findings provide a scientific basis for the clean and efficient utilization of coals and their Rs.