... Colourless,odorless transparent oily liquid Tributyl Phosphate (CAS:126-73-8 ) Chemical formula and molecular weightChemical ... formula:C12H27O4PMolecular weight:266.32CAS No.:126-73-8 Properties and usesColourless,odorless transparent ... oily liquid,flash point 170°C,b.p. 289°C,refractive index 1.4226(20° ... C),viscosity 3.5~12.2 c.p.(20°C) ..Soluble in ethanol,and other ...