# Temperature Dependence of Density and Viscosity of Biobutanol-Gasoline Blends
## 4 Conclusions
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Temperature (\({}^{\circ}\)C)**} & \multirow{2}{*}{**Temperature (K)**} & \multicolumn{6}{c}{**Dynamic Viscosity RON 95 (mPa-s)**} \\ \cline{3-6}  & & **B0** & **B5** & **B10** & **B85** & **B100** \\ \hline \(-\)10 & 263.15 & 0.94 \(\pm\) 0.006 \({}^{1\rm m,n}\) & 0.96 \(\pm\) 0.024 \({}^{\rm n}\) & 1.07 \(\pm\) 0.011 \({}^{\rm p}\) & 6.27 \(\pm\) 0.019 \({}^{\rm\,*}\) & 8.90 \(\pm\) 0.016 \({}^{\rm\,b}\) \\ \(-\)5 & 268.15 & 0.92 \(\pm\) 0.012 \({}^{\rm k,l}\) & 0.93 \(\pm\) 0.024 \({}^{\rm lm}\) & 1.01 \(\pm\) 0.011 \({}^{\rm o}\) & 5.52 \(\pm\) 0.015 \({}^{\rm o}\) & 8.16 \(\pm\) 0.021 \({}^{\rm p}\) \\ \(0\) & 273.15 & 0.84 \(\pm\) 0.021 \({}^{\rm lm}\) & 0.86 \(\pm\) 0.011 \({}^{\rm lm}\) & 0.95 \(\pm\) 0.020 \({}^{\rm m,n}\) & 4.77 \(\pm\) 0.012 \({}^{\rm s}\) & 6.93 \(\pm\) 0.019 \({}^{\rm\,*}\) \\ \(5\) & 278.15 & 0.80 \(\pm\) 0.026 \({}^{\rm d,e}\) & 0.81 \(\pm\) 0.012 \({}^{\rm d}\) & 0.90 \(\pm\) 0.018 \({}^{\rm k}\) & 4.26 \(\pm\) 0.013 \({}^{\rm\,*}\) & 6.25 \(\pm\) 0.015 \({}^{\rm o}\) \\ \(10\) & 283.15 & 0.79 \(\pm\) 0.027 \({}^{\rm d,e}\) & 0.81 \(\pm\) 0.011 \({}^{\rm c,f}\) & 0.84 \(\pm\) 0.014 \({}^{\rm lm}\) & 3.78 \(\pm\) 0.013 \({}^{\rm o}\) & 5.38 \(\pm\) 0.016 \({}^{\rm o}\) \\ \(15\) & 288.15 & 0.80 \(\pm\) 0.021 \({}^{\rm c,f}\) & 0.81 \(\pm\) 0.012 \({}^{\rm c,f}\) & 0.84 \(\pm\) 0.012 \({}^{\rm lm}\) & 3.45 \(\pm\) 0.011 \({}^{\rm v}\) & 4.63 \(\pm\) 0.022 \({}^{\rm m}\) \\ \(20\) & 293.15 & 0.78 \(\pm\) 0.025 \({}^{\rm c,d}\) & 0.82 \(\pm\) 0.014 \({}^{\rm g,h}\) & 0.84 \(\pm\) 0.017 \({}^{\rm g,h}\) & 3.09 \(\pm\) 0.003 \({}^{\rm u}\) & 4.12 \(\pm\) 0.017 \({}^{\rm z}\) \\ \(25\) & 298.15 & 0.77 \(\pm\) 0.020 \({}^{\rm b,c,d}\) & 0.82 \(\pm\) 0.012 \({}^{\rm c,f}\) & 0.85 \(\pm\) 0.017 \({}^{\rm lm}\) & 2.78 \(\pm\) 0.008 \({}^{\rm l}\) & 3.59 \(\pm\) 0.020 \({}^{\rm s}\) \\ \(30\) & 303.15 & 0.76 \(\pm\) 0.015 \({}^{\rm b,c}\) & 0.80 \(\pm\) 0.012 \({}^{\rm c,f}\) & 0.84 \(\pm\) 0.014 \({}^{\rm g,h}\) & 2.50 \(\pm\) 0.008 \({}^{\rm s}\) & 3.18 \(\pm\) 0.009 \({}^{\rm v}\) \\ \(35\) & 308.15 & 0.74 \(\pm\) 0.016 \({}^{\rm b}\) & 0.78 \(\pm\) 0.025 \({}^{\rm c,d}\) & 0.83 \(\pm\) 0.012 \({}^{\rm g,h}\) & 2.28 \(\pm\) 0.008 \({}^{\rm s}\) & 2.80 \(\pm\) 0.015 \({}^{\rm c}\) \\ \(40\) & 313.15 & 0.72 \(\pm\) 0.013 \({}^{\rm a}\) & 0.77 \(\pm\) 0.012 \({}^{\rm b,c,d}\) & 0.82 \(\pm\) 0.016 \({}^{\rm c,f}\) & 2.06 \(\pm\) 0.011 \({}^{\rm q}\) & 2.48 \(\pm\) 0.021 \({}^{\rm s}\) \\ \hline \hline \end{tabular} The same indices indicate that no statistically significant difference was demonstrated between the respective dynamic viscosity at the significance level of \(p=0.95\).  
\end{table} 
Table 5: Values of kinematic viscosity of biobutanol-gasoline (RON 95) blends (mean \(\pm\) standard deviation, \(N=20\)). \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multicolumn{1}{c}{\multirow{2}{*}{**Temperature (\({}^{\circ}\)C)**}} & \multirow{2}{*}{**Temperature (K)**} & \multicolumn{6}{c}{**Dynamic Viscosity RON 95 (mPa-s)**} \\ \cline{3-6}  & & **B0** & **B5** & **B10** & **B85** & **B100** \\ \hline \(-\)10 & 263.15 & 0.72 \(\pm\) 0.025 \({}^{\rm lk}\) & 0.73 \(\pm\) 0.021 \({}^{\rm m}\) & 0.83 \(\pm\) 0.010 \({}^{\rm o}\) & 5.12 \(\pm\) 0.026 \({}^{\rm o}\) & 7.34 \(\pm\) 0.025 \({}^{\rm a}\) \\ \(-\)5 & 268