Cas no:89-32-7 PMDA Pyromellitic diahydride
Okwu mmeghe dị nkenke
Pyromellitic dianhydride (PMDA), ngwaahịa dị ọcha bụ kristal na-acha ọcha ma ọ bụ na-acha odo odo.Ikuku nke mmiri na-ekpo ọkụ ga-amịkọrọ mmiri ngwa ngwa site na ikuku na hydrolyzed n'ime Pyromellitic Acid. A na-agbaze na dimethyl sulfoxide, dimethylformamide, acetone na ihe mgbaze ndị ọzọ na-adịghị ahụkebe na ether, chloroform na benzene.A na-eji ya eme ihe dị ka akụrụngwa maka polyimide, na onye na-ahụ maka ịre ahịa maka imepụta ihe na-agwọ ọrịa epoxy na mkpochapụ resin polyester.
Pyromellitic acid (PMA), nke a makwaara dị ka 1,2,4,5-benzenetetracarboxylicacid, na-acha ọcha na-acha odo odo powdery crystal, bụ nke a na-ejikarị eme ihe na njikọ nke polyimide, octyl pyromelliate, wdg, bụ isi ihe dị mkpa maka mmepụta nke matting na-agwọ ọrịa. .
| ITEM | PMDA | PMA |
| Ịdị ọcha wt% | 99.5% | 99% |
| Acetone PPM fọdụrụnụ | 1500 | / |
| Ebe mgbaze | 284-288 | / |
| Agba | Ọcha na-acha odo odo | Ọcha |
| Acid efu wt% | 0.5 | / |
| Nha urughuru | Na ndị ahịa na-achọ | Na ndị ahịa na-achọ |
Pls kpọtụrụ anyị ka anyị nweta COA na MSDS.Daalụ.
