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HomeProduct name list4,4'-Oxydiphthalic anhydride

4,4'-Oxydiphthalic anhydride

Synonym(s):3,3′,4,4′-Diphenyl ether tetracarboxylic acid dianhydride;3,3′,4,4′-Diphenyl ether tetracarboxylic dianhydride;3,3′,4,4′-Diphenyl oxide tetracarboxylic dianhydride;5,5′-Oxybis[1,3-isobenzofurandione]

  • CAS NO.:1823-59-2
  • Empirical Formula: C16H6O7
  • Molecular Weight: 310.21
  • MDL number: MFCD00039144
  • EINECS: 412-830-4
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-13 18:13:23
4,4'-Oxydiphthalic anhydride Structural

What is 4,4'-Oxydiphthalic anhydride?

Chemical properties

off-white to white powder

The Uses of 4,4'-Oxydiphthalic anhydride

4,4'-oxydiphthalic anhydride be used for the preparation of a polyimide material.

Preparation

The preparation of 4,4'-Oxydiphthalic anhydride is as follows:Chlorophthalic anhydride (30g, 160mmol), tetraphenyl phosphonium bromide (0.3g, 0.7mmol), and 2,5-dichlorobenzoic acid (0.08g, 0.4mmol) were heated to approximately 220℃. Potassium carbonate (7.95g, 58mmol) was added over 45 minutes. The reaction was sampled after addition of the potassium carbonate and showed a 24.9% conversion to 4,4'-oxydiphthalic anhydride. The reaction was heated for an additional 45 minutes. The reaction mixture was diluted with 1,2,4-trichlorobenzene (90g) and filtered. The 4,4'-oxydiphthalic anhydride was allowed to crystallize and was collected, washed with 1,2,4-trichlorobenzene followed by hexane, and dried in an air circulating oven at 120℃. to give crude 4,4'-oxydiphthalic anhydride, 12.9g.

1823-59-2.png

Flammability and Explosibility

Not classified

Properties of 4,4'-Oxydiphthalic anhydride

Melting point: 225-229 °C(lit.)
Boiling point: 410.39°C (rough estimate)
Density  1.4942 (rough estimate)
refractive index  1.6380 (estimate)
storage temp.  Inert atmosphere,Room Temperature
solubility  very slightly in Toluene,Acetone
form  powder to crystal
color  White to Light yellow to Light orange
CAS DataBase Reference 1823-59-2(CAS DataBase Reference)
NIST Chemistry Reference Bis-(3-phthalyl anhydride) ether(1823-59-2)
EPA Substance Registry System 1,3-Isobenzofurandione, 5,5'-oxybis- (1823-59-2)

Safety information for 4,4'-Oxydiphthalic anhydride

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
GHS Hazard Statements H412:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P273:Avoid release to the environment.

Computed Descriptors for 4,4'-Oxydiphthalic anhydride

InChIKey QQGYZOYWNCKGEK-UHFFFAOYSA-N

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