For chemists, formulators, and procurement specialists in the B2B chemical sector, a deep understanding of a compound's chemical properties is paramount. Oleamidopropyl Dimethylamine (CAS 109-28-4) is a complex molecule with a unique structure that dictates its diverse functionalities. This article, from the perspective of a seasoned chemical supplier, explores these properties and highlights why this compound is so sought after. We will also touch upon how to best source it from reputable manufacturers.

The Molecular Makeup of Oleamidopropyl Dimethylamine

Oleamidopropyl Dimethylamine, with the molecular formula C23H46N2O and a molecular weight of approximately 366.62 g/mol, is characterized by its fatty acid amidoamine structure. Key functional groups include:

• Oleyl Group: A long (C18) unsaturated hydrocarbon chain derived from oleic acid. This imparts hydrophobicity and contributes to emollient and lubricating properties. The unsaturation (double bond) in the chain influences its physical state and reactivity.
• Amide Linkage (-CONH-): This stable functional group connects the fatty acid chain to the amine portion, contributing to the molecule's overall stability.
• Dimethylaminopropyl Group: A tertiary amine group (-N(CH3)2) attached via a propyl chain. This part of the molecule is hydrophilic and, importantly, can be protonated in acidic conditions to form a cationic charge. This amphoteric nature is key to its surfactant behavior.

Key Chemical and Physical Properties

These structural elements translate into a set of advantageous properties:

• Appearance: Typically a yellow to dark yellow liquid at room temperature.
• Solubility: It exhibits amphiphilic behavior. While the hydrophobic chain limits water solubility, the amine group enhances its interaction with aqueous systems, especially under acidic conditions where it becomes cationic. It is generally soluble in organic solvents.
• pH-Dependent Behavior: In neutral to alkaline conditions, it acts as a non-ionic or weakly cationic surfactant. In acidic conditions (typically below pH 5), the tertiary amine protonates, becoming a positively charged cationic surfactant. This pH-responsive behavior is valuable in formulations.
• Surface Activity: Due to its amphiphilic nature, it significantly reduces surface tension at interfaces, enabling it to act as an excellent emulsifier, wetting agent, and dispersant.
• Stability: It shows good stability under various conditions, including resistance to acids and alkalis, making it suitable for a wide range of formulations.
• Tertiary Amine Value: Typically in the range of 150-165 mg KOH/g, indicating the amount of tertiary amine present, which is crucial for its cationic character.

Implications for Industry

These properties explain its wide utility: the hydrophobic tail provides conditioning and emollience, while the hydrophilic, pH-responsive head group drives its function as an emulsifier, antistatic agent, and mild surfactant. As a manufacturer and supplier, we ensure that our Oleamidopropyl Dimethylamine adheres to strict specifications, providing you with a reliable ingredient to buy for your applications.

Understanding these fundamental chemical properties is the first step to unlocking the full potential of Oleamidopropyl Dimethylamine in your products. For detailed specifications and to request a quote, please contact our expert team.