For chemists, R&D scientists, and production managers, a deep understanding of the chemistry behind industrial compounds like Dibutyl Terephthalate (DBT), CAS 1962-75-0, is fundamental to their effective utilization. This ester, a diester of terephthalic acid, is widely employed as a plasticizer due to its favorable physical and chemical properties. Exploring its synthesis and characteristics from a reputable manufacturer like NINGBO INNO PHARMCHEM CO., LTD. provides valuable insights for procurement and application.

Dibutyl Terephthalate, with the molecular formula C₁₆H₂₂O₄ and a molecular weight of 278.34 g/mol, presents as a colorless oily liquid. Its purity typically exceeds 99.0%, a specification critical for its performance in demanding applications. The compound's structure features a terephthalate core with two butyl ester groups attached, which allows it to effectively plasticize polymers by reducing intermolecular forces and increasing chain mobility.

The synthesis of Dibutyl Terephthalate predominantly occurs through the esterification of terephthalic acid with n-butanol. This reaction typically requires an acid catalyst, such as sulfuric acid or p-toluenesulfonic acid, and is carried out at elevated temperatures to drive off the water produced. The reaction can be represented as: Terephthalic Acid + 2n-Butanol → Dibutyl Terephthalate + 2H₂O. This process yields a high-purity product, making it a staple for chemical suppliers and manufacturers.

Another significant route for DBT production involves the transesterification of dimethyl terephthalate with n-butanol, or the alcoholysis of polyethylene terephthalate (PET) waste. These methods offer alternative pathways, with the latter presenting a more sustainable approach by utilizing recycled polymers. Understanding these synthesis methods can be beneficial when evaluating suppliers and their commitment to efficient production processes.

The physical properties of Dibutyl Terephthalate are key to its widespread application. Its low volatility ensures longevity in finished products, while its good thermal stability means it can withstand processing temperatures without significant degradation. Its solubility in common organic solvents further enhances its utility in various formulations. For procurement specialists looking to buy Dibutyl Terephthalate, these properties are crucial indicators of quality and performance.

As a plasticizer, Dibutyl Terephthalate finds its primary use in materials like PVC, where it imparts flexibility and improves processability. It is also valuable in coatings, adhesives, and textile applications, enhancing film formation, adhesion, and fabric softness. When sourcing Dibutyl Terephthalate, considering the price from reliable Chinese manufacturers like NINGBO INNO PHARMCHEM offers cost-effectiveness without compromising the essential chemical integrity of the product.

In summary, Dibutyl Terephthalate (CAS 1962-75-0) is a chemically significant ester with well-defined synthesis routes and beneficial properties for plasticization. For industries requiring this versatile compound, partnering with experienced manufacturers and suppliers who offer high-purity Dibutyl Terephthalate at competitive prices ensures optimal product development and manufacturing outcomes.