Dimethyl Terephthalate CAS 120-61-6 DMT
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- Appearance: Colorless orthorhombic crystals
- Assay: 99. 0%min
- Stock: In stock
- Sample: Available
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Dimethyl Terephthalate: The Complete Guide
Dimethyl Terephthalate for Sale
1,4-Benzenedicarboxylicacid,dimethylester; 1,4-Benzenedicarboxylicaciddimethylester; DMT
Organic raw materials
What is Dimethyl Terephthalate?
Dimethyl terephthalate (DMT) is an organic substance with the chemical formula C 6H 4 (CO 2CH 3) 2. It is a diester created by terephthalic acid and methanol. It is a white solid, which will certainly end up being a colorless fluid that can be distilled after melting.
Dimethyl terephthalate is a diester created by condensation of the carboxyl group of terephthalic acid with methanol. It is a significant part widely made use of in the manufacture of polyester and also commercial plastics. It is methyl ester, diester as well as phthalate. It is originated from terephthalic acid.
Dimethyl terephthalate is an ester. Esters react with acids and also release heat together with alcohols and also acids. Solid oxidizing acids may create fierce responses, and the exothermic heat suffices to ignite the reaction items.
Dimethyl Terephthalate Uses
Dimethyl terephthalate is commonly made use of as a commercial intermediate in the manufacture of polyethylene terephthalate (FAMILY PET) and also dioctyl terephthalate (OECD, 2001). It is utilized for polyester film (audio/video tape, X-ray movie, picture film), polyester fiber, animal container, polyester adhesive, design plastics.
Dimethyl terephthalate is primarily made use of to produce polyester material, then film as well as fiber, and also high-strength polyester insulating paint. Polyester movie is generally made use of as electrical shielding material as well as movie production (such as movie, X-ray film, photo film, audio tape, video tape, electronic computer tape, etc).
Dimethyl terephthalate is made use of to create polyester, consisting of polyethylene terephthalate (FAMILY PET) and polyethylene terephthalate (PP). It consists of benzene replaced by carboxymethyl (CARBON MONOXIDE 2CH 3) at settings 1 as well as 4. Since DMT is volatile, it is an intermediate in some recycled animal (such as plastic containers) options.
Dimethyl terephthalate and 1,8-diaminooctane undertake chemical polycondensation to generate oligomer (octylenediamine terephthalate). Dimethyl terephthalate is made use of as raw material α, ω- Organic silicon fragrant polyester was synthesized by transesterification of bis (hydroxyalkyl) terminated polydimethylsiloxane in toluene. It is used to manufacture multiblock copolymer composed of polyisobutylene, dimethyl terephthalate as well as 1,4-butanediol.
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Production of Dimethyl Terephthalate
There are several methods to generate dimethyl terephthalate (DMT). According to convention, the direct esterification of terephthalic acid is still of industrial worth. Conversely, it can be prepared by rotating oxidation as well as methylation of p-xylene using methyl p-toluenoate (PT).
- Weiteng procedure dimethyl terephthalate
The technique for creating DMT from p-xylene (PX) and also methanol includes multi-step processes involving oxidation as well as esterification. The mix of p-xylene (PX) and also methyl p-toluenoate was oxidized by air in the visibility of cobalt and manganese catalysts. The acid blend created by oxidation is esterified with methanol to produce ester mix. The crude ester mix is after that distilled to remove all resulting reboilers and deposits; Lighter esters such as monomethyl terephthalate are recycled to the oxidation area. The unrefined DMT is then sent to the crystalline section to eliminate DMT isomers, residual acids as well as fragrant aldehydes. Dimethyl terephthalate (DMT) is likewise created by the oxidation and esterification of methyl p-toluenoate.
- Direct esterification of dimethyl terephthalate
DMT can likewise be prepared by different methods, namely direct esterification of terephthalic acid and also methanol. The dimethyl terephthalate created is after that purified by purification. Also low purity terephthalic acid can be made use of in this technique.
C 8 H 6 O 4 + 2CH 3 OH → C 10 H 10 O 4 + 2 H 2 O
In the visibility of o-xylene at 250 – 300 ° C.
Dimethyl Terephthalate Suppliers and Manufacturers
As a dimethyl terephthalate supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best dimethyl terephthalate raw materials to customers all over the world.
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