Registration Dossier
Registration Dossier
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EC number: 273-521-6 | CAS number: 68988-22-7 A complex residuum from the distillation of products from the manufacture of dimethyl terephthalate by air oxidation and esterification of p-xylene. It consists of polyphenyl polyesters.
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
Several effects >50 °C
Key value for chemical safety assessment
Additional information
The melting point of the test substance was investigated in a guideline study (OECD TG 102, EU A.1). The observed effects in DSC and TGA curves above 50 °C could be caused by melting, evaporation and/or reaction/decomposition of the DMT by-products. In fact, analytical comparison of substance samples before and after heating to and storage at 150 °C did not show any evidence of decomposition.
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