Dimethyl Terephthalate (DMT)
Dimethyl Terephthalate (DMT) is an organic compound with the formula C6H4(COOCH3)2. It is a white crystalline solid that serves as a vital diester in the production of polyesters, including Polyethylene Terephthalate (PET) and Polybutylene Terephthalate (PBT). While much of the global polyester production shifted towards Purified Terephthalic Acid (PTA), DMT remains an essential feedstock for specialty resins, high-clarity films, and engineering plastics where its specific chemical properties—such as its melting point and solubility—offer distinct processing advantages. Moonarc Chemicals provides high-grade DMT via an established global supply chain, ensuring consistent quality for sensitive industrial applications.
Applications
- Primary feedstock for the production of Polyethylene Terephthalate (PET).
- Intermediate for the manufacture of polybutylene terephthalate (PBT).
- Used in the synthesis of specialty engineering plastics and resins.
- Production of BOPET films for packaging and technical applications.
- Raw material for plasticizers like Dioctyl Terephthalate (DOTP).
- Component in the manufacture of high-strength industrial fibers.
Industries served
- Polymers & Plastics
- Textiles & Apparel
- Automotive Engineering
- Packaging & Bottling
- Electronics & Electrical
Key benefits
- High purity levels ensure superior polymer transparency.
- Excellent thermal stability during high-temperature polymerization.
- Lower acidity compared to PTA, reducing corrosion in specialized reactors.
- Consistent particle size (flakes) for easy handling and dissolution.
- Proven reliability in the production of high-tenacity industrial yarns.
Technical specifications
| Assay (Dry Basis) | 99.9% Min |
| Acid Number | 0.03 mg KOH/g Max |
| Water Content | 0.05% Max |
| Color (Pt-Co) Molten | 25 units Max |
| Melting Point | 140.6°C - 141.0°C |
| Total Heavy Metals (as Pb) | < 2 ppm |
| Ash Content | 10 ppm Max |
Storage
Store in a cool, dry, well-ventilated area. Keep containers tightly closed when not in use. Protect from moisture and direct sunlight. For molten storage, maintain temperatures between 145°C and 155°C under a nitrogen blanket to prevent oxidation and color degradation.
Handling
Avoid dust formation and inhalation. Provide adequate exhaust ventilation. Wear protective gloves, safety glasses, and anti-static workwear. In molten state handling, utilize specialized thermal protection to prevent severe burns. Ensure all equipment is properly grounded to prevent static discharge.
Transport
Not classified as a hazardous material for transport (Non-regulated). For molten DMT: Transported under UN 3257 (Elevated temperature liquid, n.o.s.) if shipped above its melting point. Ensure compliance with heated transport regulations.
Packaging options
25 kg Multi-wall PE Bags · 500 kg / 1000 kg FIBCs (Big Bags) with liners · Molten form in heated ISO Tank Containers (Bulk)
Frequently asked questions
Documents
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