... oily liquid,b.p200~250°C(5mmHg),viscosity 14 c.p.(20°C),refractive index 1.4434(20°C). It is now chiefly used ... .924±0.003CB1667Content(GC),% ≥99.0GCFlash point,°C ≥190CB1671Surface tension(20~25°C),mN/m≥18.0CB5549 PPM ≤2coulometry4 Package and storage,safety ...