- The imide of phthalic acid; it's used in the manufacture of some plastics
- An imido derivative of phthalic acid, gotten as a white crystalline substance, C6H4.(CO)2NH, that has itself (like succinimide) acid properties, and forms a series of salts. Cf. Imido acid, under imido.
- A crystalline substance, C8H5NO2, made by the action of dry ammonia gas on heated phthalic anhydrid, and in other ways. It melts at 233.5° C., and acts as a monobasic acid toward alkalis.
Variant for "phthalimide"
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