Name: Dimethyl terephthalate 120-61-6
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Dimethyl terephthalate 120-61-6

Dimethyl terephthalate (DMT) is an organic compound with the formula C6H4(CO2CH3)2. It is the diester formed from terephthalic acid and methanol. It is a white solid that melts to give a distillable colourless liquid.

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Classification

Inorganic Chemistry

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Chemical Properties Of Dimethyl terephthalate 120-61-6

Appearance & Physical State	white chunks
Density	1.29
Boiling Point	288ºC
Melting Point	140-143ºC
Flash Point	154ºC
Refractive Index	1.4752
Stability	Stable. Incompatible with strong acids, strong bases, strong oxidizing agents.
Vapor Density	1.04 (vs air)
Vapor Pressure	1.15 mm Hg ( 93 °C)

Safety Information Of Dimethyl terephthalate 120-61-6

RTECS	WZ1225000
Safety Statements	S24/25
WGK Germany	1
RIDADR	3256
Risk Statements	R36/37/38

Product Application Of Dimethyl terephthalate 120-61-6

Dimethyl terephthalate is used widely as an industrial intermediate to manufacture polyethylene terephthalate (PET) and dioctyl terephthalate (OECD, 2001).It is used in the Polyester Film (Audio/Video Tape,X-ray Film,Photo Film), Polyester Fiber, Pet Bottle, Polyester Adhesive, Engineering Plastics. DMT is volatile, it is an intermediate in some schemes for the recycling of PET.
Dimethyl terephthalate is used in the production of polyesters, including polyethylene terephthalate (PET) and poly trimethylene terephthalate. It consists of benzene substituted with carboxy methyl groups (CO2CH3) at the 1 and 4 positions. Because DMT is volatile, it is an intermediate in some schemes for the recyclic of PET, e.g. from plastic bottles.
Hydrogenation of DMT affords the diol cyclohexanedimethanol, which is a useful monomer.

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