NNdimethyltetradecylamine

NNdimethyltetradecylamine, also called N,N-dimethyl-tetradecylamine, is a tertiary amine in which a tetradecyl (C14) hydrocarbon chain and two methyl groups are attached to the nitrogen atom. The molecule can be described as a long-chain alkyl amine with three carbon substituents on nitrogen: two methyl groups and a tetradecyl group. Its approximate chemical formula is C16H35N, corresponding to a molecular weight near 241.5 g/mol. It is typically a colorless to pale oil with limited solubility in water and greater solubility in organic solvents.

Synthesis of NN-dimethyltetradecylamine generally proceeds by alkylation of dimethylamine with a tetradecyl halide (for example, tetradecyl chloride or bromide) under appropriate base and solvent conditions. This N-alkylation converts the secondary amine stage to the tertiary amine, yielding the N,N-dimethyl-tetradecylamine. Alternative routes include other alkylation strategies that introduce the tetradecyl substituent onto an amine precursor, followed by methylation to reach the tertiary amine.

In industry, the compound is valued mainly as an intermediate for the production of quaternary ammonium salts and related surfactants. Quaternization of the tertiary amine with methyl or other alkyl halides produces tetradecyl-dimethylammonium salts, which function as cationic surfactants used in detergents, fabric care products, and disinfectants. The tertiary amine itself can also serve as a building block for additional amine derivatives and phase-transfer catalysts.

Safety considerations include typical amine hazards: potential skin and eye irritation and inhalation risks. Appropriate handling, ventilation, and personal protective equipment are advised, along with storage away from oxidizers and against moisture.