... esters· Synthetic lubricants· Fire-retardants 5.Quality Sepecification Composition98 grade95grade90grade(Mono-PE),wt. % ,min98.095.090.0(Hydroxyl),wt. % ,min.48 ... ),wt. % ,max0.500.500.50(PhthalicColor)(Fe,Co,Cu) max122 Mono-Pentaerythritol 95%