3,3',4,4'-Benzophenonetetracarboxylic dianhydride

3,3',4,4'-Benzophenonetetracarboxylic dianhydride
  • CAS No.:2421-28-5
Other grades of this product :

Melting point 218-222 °C (lit.)
Boiling point 320°C 5mm
density 1,57 g/cm3
vapor density 1.4 (vs air)
vapor pressure <0.1 mm Hg ( 0 °C)
refractive index 1.6380 (estimate)
Fp 324 °C
storage temp. Inert atmosphere,Room Temperature
solubility DMF: 0.1 g/mL, clear
form Needles or Crystalline Powder
color Off-white to brown
explosive limit16%
Water Solubility REACTS
λmax580nm(CH3CN)(lit.)
Sensitive Moisture Sensitive
Sublimation 220-230 ºC
BRN 761777
Stability:Hygroscopic
InChIKeyVQVIHDPBMFABCQ-UHFFFAOYSA-N
NIST Chemistry ReferenceBis-(3-phthalyl anhydride) ketone(2421-28-5)
EPA Substance Registry SystemBenzophenonetetracarboxylic dianhydride (2421-28-5)
Benzophenone-3,3',4,4'-tetracarboxylic dianhydride (BTDA) is used in industry as an intermediate and as a condensation (fiber and powder production) to make plastic products or fine chemicals.


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