Solubility of Dimethyl Ether in Pentaerythritol Tetrahexanoate (PEC6) and in Pentaerythritol Tetraoctanoate (PEC8) Between (283.15 and 353.15) K Sun, Y.; Wang, X.; Gong, N.; Liu, Z.; Journal of Chemical & Engineering Data 2014, 59, 3791-3797