... Phosphate Chemical formula and molecular weightChemical formulaC24H51O4PMolecular weight434.64CAS No.78-42-2 Properties and usesColourless,transparent oily liquid ... ,b.p.2164mmHg,viscosity 14 c.p.20),refractive index 1.443420.It is now chiefly used ... superior to adipate esters. Quality standardSpecification Super GradeColourityPt-Co,code No. ≤ 20 Acid value,mgKOH/g ≤ 0.10Acid value,mgKOH/g ...