|
Item |
Index | ||
|
Top grade |
First grade |
Qualified product | |
|
Dipentaerythritol%≥ |
85 |
85 |
80 |
|
Monopentaerythritol%≤ |
3 |
5 |
8 |
|
Tripentaerythritol%≤ |
8 |
10 |
12 |
|
Ash %≤ |
0. 05 |
0. 1 |
0. 5 |
|
Loss on heat %≤ |
1. 0 |
1. 0 |
1. 0 |
|
Hydroxyl% |
38-40 |
38-40 |
37-41 |
|
Degree of staining |
2 |
3 |
|
Uses: used to produce polyether, polyester, polyurethane, alkyd resin and photosensitive resin film