P507 for Rare Earth Extraction

Dibutyl phthalate (DBP), colorless and transparent liquid with a fragrant odor, specific gravity 1.045, refractive index 1.49, boiling point 340 degrees, viscosity point -35 degrees, flash point 171 degrees, ignition point 202 degrees, viscosity 16.3 centipoises, water solubility 202 degrees, soluble in most organic solvents and esters.

P507 (2-Ethylhexylphosphoric acid mono-2-ethylhexyl ester) is an acidic phosphorus-based extractant. It appears as a colorless to light yellow oily liquid with a density of approximately 0.94 g/mL and a flash point above 150°C. It is soluble in organic solvents such as kerosene and alcohols, but insoluble in water.