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Index\Grade

SG3

SG5

Viscosity ml/g (or k value)
Average Degree of Polymerization

135-127

(72-71)

1350-1250

118-107

(68-66)

1100-1000

Impurity,Piece ≤s

30

30

Volatile (including water)Content %≤

0.40

0.40

Apparent Density g/ml ≥

0.42

0.42

Sieve Residue %

Sieve Rate%

0.25mm Sieve
Pore ≤

2.0

2.0

Sieve Rate%

0.063mm Sieve
Pore ≥

90

90

"Pearl eye"number,Piece/400cm²≤

40

40

100g resin plasticiser absorption capacity g.

25

19

Whiteness
(160°C,100min), %≥

74

74

Water liquid extract conductance ratio s/m <

5x10^-3

Remain chloroethylene
Content μg/g<

5

5