http://physchem.ox.ac.uk/MSDS/XY/p-xylene.html (http://physchem.ox.ac.uk/MSDS/XY/p-xylene.html)
(138*C)http://physchem.ox.ac.uk/MSDS/XY/o-xylene.html (http://physchem.ox.ac.uk/MSDS/XY/o-xylene.html)
(144*C)http://physchem.ox.ac.uk/MSDS/XY/m-xylene.html (http://physchem.ox.ac.uk/MSDS/XY/m-xylene.html)
(138-9*C)