| >>> Sell Pyromellitic Dianhydride used in making Polyi
|
|
|
Character:white farina, white or light yellow rime
Melting point:286°(284—287°)
Boiling point:384(397—400°
Comparatively density:1.680
Acid number:1026—1029
Saponification number:1026—1029
|
| 发布企业:Puyang Zhongde Petroleum Resins Co.,Ltd
|
|
|