1, PVC Resin,best quality 2, Molecular Formula: (C2H3CL)N 3, CAS number: 9002-86-2 4. ... )Mumber of impurity particle(piece)40maxVolatiles content, %0.40maxResidual after sieve, %0.25mm mesh2.0max0.063mm mesh90minNumber of grain entries/400cm250maxPlasticizer ...