Name of index

Index

First grade

Qualified

Mucosity (ml/g) or( K value)

135-127

(7271)

Impurity number , Number≤

30

80

Volatile content(including water), %≤

0.4

0.5

Apparent density, g/ml≥

0.42

0.40

Remain (testing sieve ) %

0.25mm sieve≤

2.0

8.0

0.063mm sieve≥

90

85

Number of grain piece , number/400cm2≤

40

90

100g resin plasticizer absorbency, g≥

25

23

White degree(160 After 10min.), %≥

75

70

Residual VCM, ug/g( ppm)≤

10

30