Superb Hydrogen Peroxide site http://www.h2o2.com/ where else :-) Excellent peroxide thermodynamic properties page http://www.h2o2.com/intro/properties/thermodynamic.html I disagree with the labelling of the right hand axis of graph 8 upper (but not the intention of the graph) Water rocket list: In graph 8 lower note the vastly greater expansion ratio when the heat energy is trapped (purple graph)(adiabatic expansion) than when conversion is slow (blue graph)(isothermal expansion) and the temperature is not allowed to rise substantially. Graph 9 shows that total liquefaction of the fluid occurs at about 67% concentration for adiabatic expansion (ie all energy of dissociation is retained in the fluid). -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads