■ MEG (MONOETHYLENE GLYCOL)
CAS NO. 107-21-1
Monoethylene glycol (Ethylene glycol) : colourless, odourless, non-volatile liquid.
A primary use of MEG is in the manufacture of polyester (PET) resins, films and fibers.
In addition, MEG is important in the production of antifreezes, coolants, aircraft anti-icer and deicers and solvents.
■ DEG (DIETHYLENE GLYCOL)
CAS NO. 111-46-6
Diethylene Glycol is a colourless, virtually odourless, viscous liquid. Compared to MEG, it has a higher boiling point, viscosity and specific gravity.
A primary use of DEG is in the manufacture of polyester resins, polyurethanes, plasticizers
■ TEG (TRIETHYLENE GLYCOL)
CAS NO. 112-27-6
Triethylene Glycol (TEG) is a larger molecule than MEG, DEG and has two ether groups.
It is less clear and less hygroscopic than DEG, but has a higher boiling point, density and viscosity.
TEG is a component in the formulation of some pigments, printing dyes, inks and pastes.
It is also used for air fumigation.