Grade

SG-5

Excellent

Grade One

Good

Average polymerization

1100~1000

K Value

68~66

Viscosity(ml/g)

118~107

Impunity particle number(piece) ≤

16

30

80

Surface Density，g/ml≥

0.48

0.45

0.42

Volatile(including water)% ≤

0.40

0.40

0.50

Residue screened

0.25mm screen hole≤

2.0

2.0

8.0

0.063mm screen hole≥

95

90

85

Pearleye number, grain/400c㎡≤

20

40

90

Absorbing volume(g) of elasticizer/100g PVC resin≥

19

17

—

White degree (160,10minlater),% ≥

78

75

70

Conductivity of water extraction liquid, S/m≤

—

—

—

Rudimental chloroethylene volume, ppm≤

5

10

30