Amines

Triethanolamine
Triethanolamine (TEA or TEOA) is a viscous organic compound that functions as both a tertiary amine and a triol, containing three alcohol groups. It's a strong base and commonly appears colorless, though it can look yellow due to impurities. Around 150,000 tonnes were produced globally in 1999.

Triethylamine
Triethylamine (TEA, Et3N) is an aliphatic amine widely used in MALDI mass spectrometric imaging, where it improves resolution by creating transparent liquid matrices. It’s also analyzed using gas chromatography for quality control in pharmaceuticals. The viscosity of its vapor has been studied extensively across temperature ranges.