a. Chem. [f. TERE-BIC + PHTHALIC.] Derived from or containing terebic and phthalic acids, as in terephthalic acid (also called insolinic acid), C8H6O4 = C6H4 (CO2H)2, a dibasic acid produced as a white tasteless crystalline powder, nearly insoluble in water, alcohol, and ether.

1

1857.  Miller, Elem. Chem., III. vii. § 1. 443. The second is isomeric with phthalic acid, and is hence termed terephthalic acid.

2

1868.  Watts, Dict. Chem., V. 725.

3

  Hence Terephthalamide, an amide of terephthalic acid: see quot. 1868; Terephthalate, a salt of this acid.

4

1868.  Watts, Dict. Chem., V. 726. Terephthalate of Ammonium … crystallises, by slow evaporation, in small crystals having a strong lustre. Ibid. Terephthalic amides 1. Terephthalamide, C8H8N2O2 = N2H4 . (C8H4O2)″, produced by the action of ammonia on terephthalic chloride, is a white amorphous body, not dissolved by any solution.

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