Tetradecyldimethylamine
Overview
Tetradecyldimethylamine is a tertiary amine with a 14-carbon alkyl chain, primarily utilized as a chemical intermediate in industrial applications. Its molecular structure (C16H35N) enables reactivity with acids and alkylating agents to form quaternary ammonium salts, a key class of surfactants. This compound is synthesized via the reaction of dimethylamine with myristyl chloride or alcohol. Industrial-grade purity typically exceeds 98%, with minor impurities including residual amines or hydrocarbons. It is classified as a specialty chemical with niche demand in sectors like oilfield chemicals and personal care.
Physical and Chemical Properties
As a liquid at room temperature, tetradecyldimethylamine exhibits low water solubility but high miscibility with nonpolar solvents. Its boiling point (280-290°C) reflects the stability of its long alkyl chain, while the tertiary amine group provides nucleophilic reactivity. Key chemical behaviors include protonation to form cationic surfactants and quaternization for biocidal applications. The compound’s hydrophobic-lipophilic balance (HLB) makes it suitable for emulsifiers. Stability considerations include sensitivity to strong oxidizers, requiring inert storage environments.
Main Applications
The primary use of tetradecyldimethylamine is in synthesizing quaternary ammonium compounds (quats), such as cetrimonium chloride, for cosmetics and disinfectants. It also serves as a precursor for betaine-type surfactants in shampoos and fabric softeners. In industrial settings, it functions as a corrosion inhibitor in acidizing solutions for oil wells. Additional niche applications include antistatic agents for plastics and phase-transfer catalysts in organic synthesis. Demand is driven by the surfactant and oilfield chemical markets.
Safety and Storage
Tetradecyldimethylamine requires careful handling due to its corrosive nature and potential for causing skin/eye burns. OSHA and GHS classifications mandate hazard labels (GHS05, GHS07) and SDS documentation. Storage recommendations include sealed containers under nitrogen blanket to prevent oxidation. Compatibility testing is advised for packaging materials (e.g., polyethylene or stainless steel). Spill management requires neutralization with weak acids and absorption via inert materials like sand.
B2B Procurement Guide
Procurement focuses on purity (98-99% for most applications), with HPLC or GC analysis certificates. Bulk buyers (200kg+ drums) commonly negotiate contracts with chemical distributors or direct manufacturers in China, India, and the EU. Logistics considerations include UN proper shipping name (AMINES, LIQUID, CORROSIVE, N.O.S.) and Class 8 hazardous material designation. Sample testing for residual solvents or heavy metals is recommended for high-precision applications like pharmaceuticals.
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