Cas nambala: 89-32-7 PMDA Pyromellitic dianhydride
Chiyambi chachidule
Pyromellitic dianhydride (PMDA), zopangira zoyera ndi makhiristo oyera kapena achikasu pang'ono.Kuwonekera ku mpweya wonyowa mwamsanga kumatenga chinyezi kuchokera mumlengalenga ndi hydrolyzed mu Pyromellitic Acid. Kusungunuka mu dimethyl sulfoxide, dimethylformamide, acetone ndi zina organic solvents, insoluble mu etha, chloroformand benzene.Amagwiritsidwa ntchito makamaka ngati zopangira za polyimide, ndi crosslinking agent popanga epoxy machiritso ndi kutha kwa utomoni wa polyester.
Pyromellitic acid(PMA), yomwe imadziwikanso kuti 1,2,4,5-benzenetetracarboxylicacid, yoyera mpaka chikasu ngati kristalo wa ufa, imagwiritsidwa ntchito makamaka popanga polyimide, octyl pyromelliate, ndi zina zambiri, ndiye chopangira chachikulu chopangira machiritso. .
| ITEM | PMDA | PMA |
| Purity wt% | 99.5% | 99% |
| Otsalira Acetone PPM | 1500 | / |
| Malo osungunuka | 284-288 | / |
| Mtundu | Choyera mpaka chikasu | Choyera |
| Free Acid wt% | 0.5 | / |
| Tinthu kukula | Pa zofuna za makasitomala | Pa zofuna za makasitomala |
Pls tilankhule nafe kuti tipeze COA ndi MSDS.Zikomo.
