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dimethyl terephthalate

Product name dimethyl terephthalate
Synonyms terephthalic acid dimethyl ester
benzene-1,4-dicarboxylic acid dimethyl ester
GOST no data
CAS 120-61-6

Dimethyl terephthalate (DMT) is an ester of terephthalic acid and methanol; colorless crystallile compound; almost insoluble in water, ethylene glycol, methanol, chloroform, xylene.

Production.

Dimethyl terephthalate is produced by oxidation with air of mixture of p-xylene and methyl p-toluate CH3C6H4COOCH3 at 140-150°C and 0.6 MPa with following esterification with methanol vapours at 250°C and 2.5 MPa. After distillation product is recrystallized from methanol.

Uses.

Dimethyl terephthalate mainly is used in production of polyethylene terephthalate (PET) and polybutylene terephthalate (PBT).

Manufacturer(s) JSC Azot Novomoskovsk
OJSC Mogilevkhimvolokno
Chemical structure of dimethyl terephthalate

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