In the realm of chemical synthesis, understanding the fundamental properties of raw materials is key to unlocking their full potential. Ditrimethylolpropane (CAS 23235-61-2), often referred to as DTMP, is a chemical compound that, while having established industrial uses, warrants a deeper dive into its chemical nature. As a leading manufacturer and supplier of high-purity chemicals in China, we provide DTMP and believe that understanding its intrinsic properties will empower our clients to make informed decisions for their applications.

Decoding the Molecular Structure of Ditrimethylolpropane

Ditrimethylolpropane is a polyol, a molecule characterized by the presence of multiple hydroxyl (-OH) functional groups. Its chemical formula is C12H26O5, with a molecular weight of approximately 250.33 g/mol. The structure can be visualized as two trimethylolpropane units linked by an ether bridge. Specifically, it is 2,2'-[oxybis(methylene)]bis[2-ethyl-1,3-propanediol]. This tetra-functional alcohol structure is central to its utility:

  • Tetra-functionality: The presence of four primary hydroxyl groups allows DTMP to participate in multiple reaction sites, making it an excellent cross-linking agent or building block for polymers and esters.
  • Ether Linkage: The ether oxygen in the molecule contributes to its flexibility and can influence properties like solubility and thermal stability.
  • Steric Hindrance: The ethyl and hydroxymethyl groups around the central carbons provide some steric bulk, which can affect reaction rates and the properties of resulting polymers.

These structural features directly translate into the observed physical and chemical properties that make DTMP valuable.

Key Physical and Chemical Properties of DTMP

Understanding the specific properties of Ditrimethylolpropane is crucial for its effective use:

  • Appearance: Typically found as white or slightly colored flaky crystals.
  • Melting Point: Generally in the range of 106-115 °C, indicating it is a solid at room temperature.
  • Purity: High-purity grades, such as 99.0% minimum, are commonly available and preferred for demanding applications to ensure predictable reactivity and minimal by-products.
  • Solubility: It exhibits moderate solubility in water and is soluble in common organic solvents like methanol.
  • Hydroxyl Value: A significant property for esterification, indicating the number of hydroxyl groups available for reaction. Typical values are in the range of 870-910 mg KOH/g.

These properties dictate its suitability for applications ranging from radiation-curable coatings, where its tetra-functionality leads to highly cross-linked networks, to synthetic lubricants, where its ester derivatives provide excellent thermal stability.

Sourcing High-Purity Ditrimethylolpropane

As a chemical manufacturer in China, our focus is on delivering Ditrimethylolpropane with consistently high purity and reliable physical properties. When you choose to buy Ditrimethylolpropane from us, you are ensuring the quality necessary for optimal performance in your industrial processes. Our commitment extends to providing competitive pricing and ensuring a stable supply chain for our global clientele.

Conclusion

Ditrimethylolpropane (CAS 23235-61-2) is a fascinating and highly useful polyol whose chemical structure underpins its diverse applications in industrial chemistry. From its role in creating robust coatings and high-performance lubricants to its utility as a versatile chemical intermediate, DTMP's properties are directly linked to its molecular design. We encourage R&D scientists and procurement specialists to explore the benefits of using high-purity Ditrimethylolpropane from our trusted China manufacturing base. Contact us today to learn more about its chemistry and to secure your supply.