Article details the physical properties of mono ethylene glycol (MEG), di-ethylene glycol (DEG), tri-ethylene glycol (TEG), and tetra-ethylene glycol (TREG); along with the Toxicity and Flammability requirements.
Glycols as a class are of a low order of toxicity (with the exception of oral toxicity). They do not vaporize readily at normal temperatures and, therefore, do not constitute a hazard from inhalation. They are also not active skin irritants.
Glycols will burn and should be handled as if they were hydrocarbons.