For chemists, formulators, and R&D professionals in the chemical industry, a deep understanding of a compound's chemical properties and reactivity is essential for innovation and product development. Diethanol Isopropanolamine (DEIPA, CAS 6712-98-7) is a fascinating molecule whose unique structure dictates its versatile applications. This article delves into the chemical characteristics of DEIPA, providing insights for professionals seeking to leverage its potential.

Molecular Structure and Key Properties of DEIPA

DEIPA, with the chemical formula C7H17NO3 and a molecular weight of approximately 163.21 g/mol, is classified as an alkanolamine. Its IUPAC name is 1-[bis(2-hydroxyethyl)amino]propan-2-ol. The molecule features:

  • A secondary alcohol group (-OH) on the propanol backbone.
  • A tertiary amine group (-N<) connecting the propanol moiety to two hydroxyethyl chains.
  • Two primary alcohol groups (-OH) at the ends of the hydroxyethyl chains.

These functional groups contribute to its key physical and chemical properties:

  • Appearance: Typically a colorless to pale yellow liquid.
  • Solubility: Highly soluble in water and various organic solvents like ethanol and acetone, making it easy to incorporate into formulations.
  • Reactivity: The presence of both hydroxyl and amine groups makes DEIPA a reactive molecule capable of undergoing esterification, amidation, and other reactions characteristic of alcohols and tertiary amines.
  • Hygroscopicity: Like many alkanolamines, DEIPA can absorb moisture from the air.
  • Basicity: As an amine, DEIPA is basic, with a pKa around 14.42 (predicted). This basicity is useful for pH adjustment in formulations.

Reactivity and Application Relevance

The dual functionality of DEIPA is the foundation of its utility:

  • As a Cement Grinding Aid: The hydroxyl groups contribute to its ability to adsorb onto cement particles, preventing agglomeration and improving grinding efficiency. The amine group may also play a role in its surface activity and dispersion capabilities. Manufacturers often buy DEIPA for its dual role in improving grinding and enhancing cement strength.
  • In Chemical Synthesis:
    • Esterification: The hydroxyl groups can react with carboxylic acids or acid anhydrides to form esters, which are valuable as emulsifiers, plasticizers, or lubricants.
    • Reactions with Isocyanates: The hydroxyl groups readily react with isocyanates to form urethane linkages, the basis of polyurethane polymers.
    • Salt Formation: The tertiary amine group can react with acids to form salts, influencing solubility and other properties.
  • As a pH Adjuster/Buffer: Its basic nature makes it suitable for adjusting and maintaining pH in various industrial and personal care formulations.

Sourcing High-Quality DEIPA for Your Formulations

For formulators, ensuring the quality and purity of DEIPA is crucial for consistent results. When purchasing from manufacturers, look for detailed specifications and reliable Certificates of Analysis. We supply DEIPA with consistent purity, ensuring it meets the demanding requirements of chemical synthesis and industrial applications. If you are interested in understanding the specific reactivity or purchasing DEIPA, our team is ready to assist you.