"Polywater was supposed to be an alternate form of ordinary H2O in which the molecules were linked to produce a strange new substance, denser and far more viscous than water, which remained a liquid all the way from -70 degrees Fahrenheit to almost 500 degrees."
-Felix Franks
http://mitpress.mit.edu/catalog/author/default.asp?aid=2272
"Several polywater samples were prepared by the standard methods and have the same physical and spectroscopic properties as those made in other laboratories. However, a variety of chemical analyses show high concentrations of impurities which may account for many of the anomalous properties."
-D. L. Rousseau
http://adsabs.harvard.edu/abs/1970Sci...167.1715R