Homophthalic anhydride CAS No.703-59-3 / Cat No.EBD10306
1,3-Isochromandione
benzoglutaric anhydride
1H-isochromene-1,3(4H)-dione
o-Carboxyphenylacetic acid cyclic anhydride~1,3-Isochromanedione
benzoglutaric anhydride
1H-isochromene-1,3(4H)-dione
o-Carboxyphenylacetic acid cyclic anhydride~1,3-Isochromanedione
Homophthalic anhydride
homophthalic anhydride
Properties
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Appearance:
slightly yellow to beige or light green powder
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Density:
1.347 g/cm3
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Melting point:
140-142 °C(lit.)
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Boiling point:
324.5 °C at 760 mmHg
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Flashing point:
159 °C
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Storage temperature:
2-8°C
Safety Information
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Symbol:
-
Signal words:
Warning -
Hazard statements:
H315 Causes skin irritation.
H319 Causes serious eye irritation.
H335 May cause respiratory irritation.
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Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
NMR Spectrum
Prediction： 1H NMR (400 MHz, DMSO-d6): delta = 8.05 (d, J = 8.2 Hz, 1H), 7.75 (app. t, 1H), 7.52 (app.t, 1H), 7.44 (d, J = 7.8 Hz, 1H), 4.27 (s, 2H)
1H NMR
13C NMR
