Parameter
|
NO
|
Item
|
Premium grade
|
High-class product
|
Conforming article
|
|
1
|
Naphthalin content%
|
94
|
92
|
90
|
|
2
|
colour
|
White, reddish or yellowish powder , flake
|
||
|
3
|
Crystallization point ℃-(above)
|
78
|
76
|
76.5
|
|
4
|
Nonvolatile % (less than)
|
0.04
|
0.06
|
0.08
|
|
5
|
Ash content % (less than)
|
0.01
|
0.01
|
0.02
|
|
6
|
Package
|
50±0.5KG/bag(coextruded film
+weave bag)
|
||