Benzophenon-3,3':4,4'-tetracarbonsaeuredianhydrid

Bezeichnung:Benzophenon-3,3':4,4'-tetracarbonsaeuredianhydrid

CAS-Nr2421-28-5

Englisch Name:3,3',4,4'-Benzophenonetetracarboxylic dianhydride

CBNumberCB5164853

SummenformelC17H6O7

Molgewicht322.23

MOL-Datei2421-28-5.mol

Synonyma

Benzophenon-3,3':4,4'-tetracarbonsaeuredianhydrid

Benzophenon-3,3':4,4'-tetracarbonsaeuredianhydrid physikalisch-chemischer Eigenschaften

Schmelzpunkt	218-222 °C (lit.)
Siedepunkt	320°C 5mm
Dichte	1,57 g/cm³
Dampfdichte	1.4 (vs air)
Dampfdruck	<0.1 mm Hg ( 0 °C)
Brechungsindex	1.6380 (estimate)
Flammpunkt	324 °C
storage temp.	Inert atmosphere,Room Temperature
Löslichkeit	DMF: 0.1 g/mL, clear
Aggregatzustand	Needles or Crystalline Powder
Farbe	Off-white to brown
Explosionsgrenze	16%
Wasserlöslichkeit	REACTS
Sensitive	Moisture Sensitive
maximale Wellenlänge (λmax)	580nm(CH3CN)(lit.)
Sublimation	220-230 ºC
BRN	761777
Stabilität	Hygroscopic
InChIKey	VQVIHDPBMFABCQ-UHFFFAOYSA-N
LogP	3.3 at 25℃
NIST chemische Informationen	Bis-(3-phthalyl anhydride) ketone(2421-28-5)
EPA chemische Informationen	Benzophenonetetracarboxylic dianhydride (2421-28-5)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37
S-Sätze:	25
WGK Germany	1
F	21
Selbstentzündungstemperatur	975 °F
TSCA	Yes
HS Code	29183000

Gefahreninformationscode (GHS)

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37:Reizt die Augen und die Atmungsorgane.
S-Sätze Betriebsanweisung:
S25:Berührung mit den Augen vermeiden.
Chemische Eigenschaften
white crystall powder
Verwenden
BTDA is important monomer of polyimide, and used for production of polyimide material.
Verwenden
BTDA polymer fine free-flowing powder suitable for general purposes. BTDA Microfine Micronized powder facilitates mixing in epoxy resins. BTDA ultrapure high-purity, high-assay powder for critical polyimide synthesis.
Verwenden
Used in the synthesis of polyimides.
Allgemeine Beschreibung
Benzophenone-3,3′,4,4′-tetracarboxylic acid is formed by hydrolysis, it can be converted to the dianhydride by treating with Ac₂O (molar ratio 4 to 1 of acid).The dianhydride is used to synthesize polyimides, which are highly flexible in nature due to the presence of keto and carbonyl groups in the dianhydride molecule. The keto and carbonyl groups subsequently increase the spacing between the imide rings enhancing the solubility and processibility.
Flammability and Explosibility
Non flammable
läuterung methode
The main impurity is the free acid formed by hydrolysis (check for OH bands in the IR). This can be converted to the dianhydride by treating with Ac2O (molar ratio of 4 to 1 of acid), heating at 110-120o for 1.5 to 2hours, cooling to 0—5o and collecting the dianhydride. This is then dissolved in hot dioxane or Me2CO, filtered and cooled to 10—15o. The moisture sensitive solid is collected and dried at 120—130o in vacuo. It has been sublimed at high vacuum. [Faberov et al. J Org Chem USSR 4 153 (English translation) 1968.]

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Upstream-Materialien And Downstream Produkte

Benzophenon-3,3':4,4'-tetracarbonsaeuredianhydrid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

2421-28-5, 3,3',4,4'-Benzophenonetetracarboxylic dianhydride Verwandte Suche:

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