Toying Around With Chemistry

(1, 4- Benzenedicarboxylic acid)

Terephthalic Acid is  an isomer of phthalic acid .  Terephthalic Acid appears as white, odorless crystals. It has a molecular weight of 166.14 g/mol. It sublimes at 300 °C with out melting. The boiling point is 402 °C and melting point of 427 °C. It has a pH of 3.9. Terephthalic Acid can be produced through oxidation of para-diderivatives of Benzene or an even better method of oxidation of caraway oil. It is practically insoluble with water, alcohol, and ether. Until 1970, it was difficult to work with due to the insolubility, when much of the crude Terephthalic Acid was converted to dimethyl ester for purification. Although Terephthalic Acid is mostly used as a raw material polyester fiber it is also used as PET bottle, PET-film, as non-fiber field, poultry feed additives, and engineering plastics.
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References:

http://www.chemicalland21.com/arokorhi/petrochemical/PTA.htm

http://en.wikipedia.org/wiki/Terephthalic_acid

www.tennoji-h.oku.ed.jp/tennoji/oka/2004/04ko2-53.htm

http://web.umr.edu/~wlf/CHEM381/chap32.html

http://www.creativechildonline.com/awardpages/stuffedtoys.html

http://www.elmhurst.edu/~chm/onlcourse/chm110/outlines/topic5.html
 
 

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Rachael Crookshanks


 
 

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