TEREPHTHALIC ACID - (100-21-0)

Einführung

Name: terephthalic acid; 1,4-benzenedicarboxylic acid; p-phthalic acid
* IUPAC
CAS-Nummer: 100-21-0
Chemische Formel: C8H6O4 or C6H4(COOH)2
Molmasse: 166.13084 g
Aggregatszustand: white crystals/powder
Massenprozent: C 57.837 %; H 3.6402 %; O 38.522 % 
Isomers:  isophthalic acid  •  phthalic acid

Einstufung

Verwendung / Funktion

• "Forms polyesters with glycols which are made into plastic films and sheets; in analytical chemistry." 1

Physikalische Eigenschaften

Schmelzpunkt:*
425°C 2 = 698.15 K = 797°F
Siedepunkt:*
300°C 2 = 573.15 K = 572°F
300°C 3 = 573.15 K = 572°F

* - 1 atm pressure

Löslichkeit

qualitativ:
unlöslich:  • • 3
schwach löslich:  3

Kleben

Doppelbindungen: 5
Dreifachbindungen: 0
Sigma Bonds: 18
Pi Bonds: 5
Gesamt: 23
Carboxygruppen: 2
HYDROXYLGRUPPEN: 0
Hybridisation: all carbons are sp2; double bonded oxygen is sp2; single bonded oxygen is sp3

Die Reaktionen

The oxidation of p-xylene by oxygen in air:


Für mehr Informationen

Quellen

(1) - The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals, 13th ed.; Budavari, S.; O'Neil, M.J.; Smith, A.; Heckelman, P. E.; Kinneary, J. F., Eds.; Merck & Co.: Whitehouse Station, NJ, 2001; entry 9238.
(2) - Dean, John A. Lange's Handbook of Chemistry, 11th ed.; McGraw-Hill Book Company: New York, NY, 1973; p 7:331.
(3) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 3-38.