Vapor pressure data are presented for fluorine, oxygen, chlorine trifluoride, nitrogen tetroxide, nitric acid, hydrogen peroxide, ethylene oxide, hydrogen, ammonia, pentaborane, unsymmetrical dimethylhydrazine, monomethylhydrazine, hydrazine and a series of hydrocarbons including decalin, tetralin, bicyclohexyl and other high density fuels. In addition, flammability characteristics diagrams are included for each of these fuels in contact with air and where available, for other oxidants (e.g. oxygen and nitrogen tetroxide). Also included are sections on definitions and theory and applications. Each section is complete in itself and can be used separately.