NO.

CLASSIFCATION

ITEMS

SG1

SG2

SG3

SG4

High

class

First

class

Sec.

class

High

class

First

class

Sec.

class

High

class

First

class

Sec.

class

High

class

First

class

Sec.

class

1

VISCOSITY NUMBER
ML/G(OR K VALUE)

(OR AVERAGE DEGREE

OF POLYMERIZATION)

156-144

77-75

143-136

74-73

135-127

72-71

1350-1250

126-119

70-69

1250-1150

2

IMPURITY PARTLCLE

NUMBER≤

16

30

90

16

30

90

16

30

90

16

30

90

3

VOLATILE (MOISTURE)%≤

0.30

0.40

0.50

0.30

0.40

0.50

0.30

0.40

0.50

0.30

0.40

0.50

4

APPARENT DENSITY≥

0.45

0.42

0.40

0.45

0.42

0.40

0.45

0.42

0.40

0.45

0.42

0.40

5

SCREEN

FLOATING

0.25MM≤

2.0

2.0

8.0

2.0

2.0

8.0

2.0

2.0

8.0

2.0

2.0

8.0

0.063MM≥

90

90

80

90

90

80

90

90

80

90

90

80

6

BLACK OR YELLOW

PARTICLE

20

40

20

40

20

40

7

WHITE CONTENT

(160℃,10MIN) %≥

74

74

74

8

RESIDUARY VC

PPM≤

8

10

8

10

8

10