Dimethyl Terephthalate (DMT), identified by CAS number 120-61-6, is a vital organic chemical compound with significant industrial applications. This article provides an in-depth look at DMT, covering its key properties, its critical role as an intermediate, and insights into its supply chain, particularly from manufacturers like NINGBO INNO PHARMCHEM CO.,LTD.

Physical and Chemical Properties of DMT

DMT typically presents as white chunks, a characteristic that aids in its identification and handling. Its physical and chemical properties are well-defined:

  • Appearance: White Chunks
  • Purity: Typically ≥99.0%
  • CAS Number: 120-61-6
  • Molecular Formula: C10H10O4
  • Molecular Weight: 194.184 g/mol
  • Density: 1.2±0.1 g/cm³
  • Melting Point: 140 °C
  • Boiling Point: 285.0±8.0 °C at 760 mmHg
  • Flash Point: 148.0±7.9 °C

These specifications highlight DMT's stability and suitability for various chemical processes.

Primary Industrial Applications

The most prominent application of DMT is its use as a key intermediate in the synthesis of Pigment Yellow 155 (PY155). PY155 is a high-performance yellow pigment valued for its excellent color strength, lightfastness, and thermal stability, making it ideal for use in automotive coatings, plastics, printing inks, and industrial paints. DMT's consistent purity and structure are crucial for achieving the desired quality in PY155.

Furthermore, DMT serves as a monomer in the production of polyesters, most notably polyethylene terephthalate (PET), via transesterification. This application underscores its importance in the polymer industry, contributing to materials used in textiles, packaging, and films.

Manufacturing and Supply Chain

NINGBO INNO PHARMCHEM CO.,LTD. is a significant player in the production and supply of DMT. They specialize in bulk supply and contract manufacturing of fine chemicals and pharmaceutical intermediates. The company's focus on robust R&D, advanced analytical equipment, and stringent quality control ensures a reliable supply of high-purity DMT. Available in 25 kg drums or custom packaging, DMT requires storage in cool, ventilated areas to maintain its optimal condition.

In summary, Dimethyl Terephthalate is a foundational chemical with indispensable roles in producing high-performance pigments and polymers. Its well-defined properties and consistent quality, backed by reliable suppliers like NINGBO INNO PHARMCHEM CO.,LTD., make it a vital component for numerous industrial applications.