CAS nr: 89-32-7 PMDA Pyromellitic dianhydride
Kev taw qhia luv luv
Pyromellitic dianhydride (PMDA), cov khoom ntshiab yog dawb orslightly daj crystals.Cov huab cua noo noo yuav sai sai absorbmoisture los ntawm huab cua thiab hydrolyzed rau hauv Pyromellitic Acid.Dissolved nyob rau hauv dimethyl sulfoxide, dimethylformamide, acetone thiab lwm yam organic solvents, insoluble nyob rau hauv ether, chloroformand benzene.Feem ntau yog siv los ua cov khoom siv raw rau polyimide, thiab tus neeg sawv cev crosslinking rau kev tsim cov epoxy curing tus neeg saib xyuas thiab polyester resin extinction.
Pyromellitic acid (PMA), tseem hu ua 1,2,4,5-benzenetracarboxylicacid, dawb mus rau yellowish powdery siv lead ua, feem ntau yog siv nyob rau hauv lub synthesis ntawm polyimide, octyl pyromelliate, thiab lwm yam., yog lub ntsiab raw khoom rau zus tau tej cov matting curing agent. .
| Yam khoom | PMDA | PMA |
| Purity wt% | 99.5% | 99% |
| Residual Acetone PPM | 1500 | / |
| Melting point | 284-288 ib | / |
| Xim | Dawb rau daj | Dawb |
| Dawb Acid wt% | 0.5 | / |
| Particle loj | Raws li cov neeg siv khoom xav tau | Raws li cov neeg siv khoom xav tau |
Pls hu rau peb kom tau txais COA thiab MSDS.Ua tsaug.
