Cas no:89-32-7 PMDA Pyromellitic diahydride
Hordhac kooban
Pyromellitic dianhydride (PMDA), alaabada saafiga ah waa kiristaalo huruud ah oo cad ama khafiif ah. Hawo qoyan oo la soo bandhigo waxay si dhakhso ah u nuugi doontaa hawada waxayna hydrolyzed geli doontaa Pyromellitic Acid. Waxa lagu milmay dimethyl sulfoxide, dimethylformamide, acetone iyo dareerayaasha kale ee organic, aan milmin ee ether, chloroform and benzene. Inta badan waxaa loo isticmaalaa sidii walxo ceeriin ah oo loogu talagalay polyimide, iyo wakiilka iskutallaabta ee soo saarista wakiilka daaweynta epoxy iyo baabi'inta resin polyester-ka.
Pyromellitic acid (PMA), oo sidoo kale loo yaqaan 1,2,4,5-benzenetetracarboxylicacid, caddaan ilaa huruud ah crystal budada ah, ayaa inta badan loo isticmaalaa in falgalka polyimide, octyl pyromelliate, iwm, waa ceeriin ugu weyn ee wax soo saarka ee wakiilka daawaynta matting.
| ITEM | PMDA | PMA |
| daahir wt% | 99.5% | 99% |
| Hadhaaga acetone PPM | 1500 | / |
| barta dhalaalaysa | 284 ~ 288 | / |
| Midabka | Cadaan ilaa huruud ah | Caddaan |
| Acid bilaash ah wt% | 0.5 | / |
| Cabbirka walxaha | Codsiga macaamiisha | Codsiga macaamiisha |
Pls nala soo xiriir si aad u hesho COA iyo MSDS. Mahadsanid.
