4 4-Oxydiphthalic anhydride ODPA 1823-59-2
Khoom npe: 4,4'-Oxydiphthalic anhydride (ODPA) CAS: 1823-59-2 Nr MF: C16H6O7 PIB: 310.21 PIB: 412-830-4 Melting point: 225-229 ° C (lit.) Kub taw tes: 410.39 ° C (kwv yees ntxhib) Qhov ceev: 1.4942 (nruab nrab kwv yees) Refractive Index: 1.6380 (kwv yees)
4,4'-oxydiphthalic anhydride yog siv rau kev npaj cov khoom siv polyimide.
1, T / T
2, L / C
3, Visa
4, credit card
5, Paypal ua
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7, Western union
8, MoneyGram
9 Tsis tas li ntawd, qee zaum peb kuj lees txais Bitcoin.
Khaws lub thawv ntim khoom ntim thiab khaws cia rau hauv qhov chaw txias thiab qhuav, thiab xyuas kom meej tias muaj qhov cua zoo lossis tso pa tawm hauv chaw ua haujlwm
Yog siv thiab khaws cia raws li kev qhia tshwj xeeb, nws yuav tsis decompose. Tsis muaj kev paub txog kev phom sij. Tsis txhob oxides.