Number

Item

High-class grade

First-class grade

Up to standard

1

Mucosity (ml/g) or K value

118-107

(68-66)

2

Impurity number (number<=)

16

30

90

3

volatile content %<=

0.4

0.4

0.5

4

Apparent density g/ml>=

0.45

0.42

0.40

5

remain(testing sieve)%

0.25mmsieve<=

2.0

2.0

8.0

0.063mmsieve>=

90

90

80

6

“fish eye” number

(number/400cm2<=)

20

40

7

100g resin platicizer absorbency(g>=)

20

19

8

white degree (160°C after 10min)%<=

74

9

Rudimental chloroethyeue monomer ppm<=

10

10