... equilibrium hydrogen, that is, hydrogen with the equilibrium distribution of its ortho and para states. Normal hydrogen at room temperature contains 25% para hydrogen and 75% ortho hydrogen. bVP ... tests, Flame Temperatures, and Density of Ethanol-Water Mixtures • An update of lists of Chemical Carcinogens and Interstellar Molecules. The Handbook of Chemistry and Physics is dependent ... D. R., Ed., CRC Handbook of Chemistry and Physics, 82nd Ed., CRC Press, Boca Raton FL,2001.2. Audi, G., and Wapstra, A. H., Nucl. Phys., A595, 409, 1995.3. Rosman, K. J. R., and Taylor, P....