## 3 Results  
### Density and Viscosity  
The experimental densities and viscosities for pure DMSO, DEG and MDEA in the temperature range from 293.15 to 313.15 K are found to be in good agreement with reported values in the literature and comparison of these values is reported in Table 2.  
DMSO density values reported in the literature [1; 6; 9; 10; 11; 12; 13; 14; 15; 16] differ from our experimental data with a maximum of 0.2% and viscosity values reported in the literature [3; 12; 17; 18; 19; 20; 21] differ with a maximum of 2.5%. For DEG, density values found in the literature [1; 9; 22; 23; 24; 25; 26; 27; 28] differ with a maximum of 0.2% and for MDEA [1; 29; 30; 31; 32; 33; 34] they differ by less than 0.07%. Viscosity values reported in the literature differ from our results by a maximum of 2.3% for DEG [26; 28] and a maximum of 2.1% for MDEA [29; 30; 31; 35; 36; 37]. Viscosity values of DMSO and DEG reported by [PERSON] et al. [9] differ by more than 30% compared with our results. These differences can be attributed to the different purity of the reagents used. \begin{table}
\begin{tabular}{c c c c c} \hline \multirow{2}{*}{**Component**} & \multirow{2}{*}{**T/(K)**} & \(\rho\)/(g\(\cdot\)cm\({}^{-3}\)) & \multicolumn{2}{c}{\(\eta\)/(mPa\(\cdot\)s)**} \\ \cline{3-5}  & & **This Work** & **Lit. Value** & **This Work** & **Lit. Value** \\ \hline \multirow{8}{*}{DMSO} & & & 1.1002 [10] & & 2.245 [17] \\  & & & 1.10053 [11] & & 2.2255 [18] \\  & & & 1.100865 [1] & & 2.2255 [18] \\  & & & 1.0955 [12] & & 2.00 [12] \\  & & & 1.0954 [13] & & 2.025 [19] \\  & & & 1.09530 [6] & & 1.40 [9] \\  & & & 1.0946 [9] & & \\  & & & 1.0904 [12] & & 1.84 [12] \\  & 293.15 & 1.1002 & 1.0900 [14] & & 1.843 [20] \\  & & & 1.0888 [9] & 2.271 & 1.843 [20] \\  & & & 1.090812 [1] & & 1.21 [9] \\  & 298.15 & 1.0952 & 1.0854 [12] & 2.021 & 1.69 [3] \\  & & & 1.08573 [15] & & 1.6689 [21] \\  & & & 1.0831 [9] & & 1.12 [9] \\  & & & 1.0807 [12] & & 1.12 [9] \\  & & & 1.08024 [16] & & 1.5351 [21] \\  & 303.15 & 1.0902 & 1.0785 [9] & 1.843 & 1.52 [12] \\  & & & 1.080770 [1] & & 1.00 [9] \\  & & & & \\  & 308.15 & 1.0853 & & 1.710 & \\  & & & & \\  & 313.15 & 1.0803 & & 1.525 & \\ \hline \end{tabular}
\end{table} 
Table 2: Experimental and literature values of density (\(\rho\)) and viscosity (\(\eta\)) of the pure components in the temperature range from 293.15 to 313.15 K.  
The experimental densities and viscosities for the binary systems DEG (1) + DMSO (2) and MDEA (1) + DMSO (2) are listed in Tables 3 and 4. The density of binary system DEG (1) + DMSO (2) increases with the increase in DEG concentration, and for the system MDEA (1) + DMSO (2), density increases with the increase in DMSO concentration. Viscosity of binary system DEG (1) + DMSO (2) increases with the increase in DEG concentration, while for the system MDEA (1) + DMSO (2), it increases with the increase in MDEA concentration. The experimental densities and viscosities for the binary systems DEG (1) + DMSO (2) and MDEA (1) + DMSO (2) are listed in Tables 3 and 4. The density of binary system DEG (1) + DMSO (2) increases with the increase in DEG concentration, and for the system MDEA (1) + DMSO (2), density increases with the increase in DMSO concentration. Viscosity of binary system DEG (1) + DMSO (2) increases with the increase in DEG concentration, while for the system MDEA (1) + DMSO (2), it increases with the increase in MDEA concentration.