Triethylammonium

Triethylammonium (CAS 17440-81-2) is the protonated form of triethylamine, existing as a cationic species in solution and commonly encountered as a counterion in salt formulations and buffer systems.

Known in analytical and biotech contexts as TEAH, it functions primarily as a pH-regulating agent and ionic pairing component across several industrial sectors. In pharmaceutical manufacturing, salts are used as ion-pair reagents.

These reagents are essential in HPLC method development, enabling the separation of polar and ionizable drug compounds. Biotech and life sciences workflows rely on triethylammonium acetate buffers for oligonucleotide purification.

These buffers are also critical for the chromatographic analysis of nucleic acids. In agrochemical formulations, the cation serves as a counterion in herbicide and pesticide salt forms, influencing solubility.

This influence extends to the bioavailability of active ingredients in various crops. Water treatment applications utilize triethylammonium-based compounds for pH adjustment and corrosion inhibition in industrial cooling systems.

The chemical is supplied commercially as salts rather than the free cation, most commonly as triethylammonium acetate or triethylammonium bicarbonate in liquid or solid form for diverse industrial uses.

Analytical-grade and HPLC-grade specifications are standard for life sciences procurement. Technical-grade material is available for industrial and agrochemical applications requiring bulk chemical supplies.