Tris(2-butoxyethyl) phosphate Chemical Properties Melting point -70°C Boiling point 215-228 °C4 mm Hg(lit.) density 1.006 g/mL at 25 °C(lit.) vapor density 13.7 (vs air) vapor pressure 0.03 mm Hg ( 150 °C) refractive index n20/D 1.438(lit.) Fp >230 °F form Liquid color Clear colorless to very slightly yellow Water Solubility Soluble Stability: Stable. Combustible. Incompatible with strong oxidizing agents.