Polyvinyl Chloride (SG-5)
1. Specification:
GRADE SG-5
Premium Grade First Grade Qualified Grade
Average polymerization 1100-1000
K-value 68-66
Viscosity number ml/g 118-107
Volatiles(including water) max 0.4 0.4 0.5
Impurity particle number max 16 30 90
Apparent density min 0.45 0.42 0.40
Residue screened 0.25mm screen hole max 2.0 2.0 8.0
0.063mm screen hole min 90 90 80
Pearlleye number, grain 400cm2 max 20 40 -
Absorbing volume of plasticizer g/100g pvc resin min 20 19 -
White content (160oc, 10 min) % min 74 - -
Conductivity of water extraction liquid s/m max - - -
Residuary content of chloroethylene μg/g max 8 10 -