Menu

Properties of Glycols

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. 

TOXICITY

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.

FLAMMABILITY

Glycols will burn and should be handled as if they were hydrocarbons.

Glycol

MEG

DEG

TEG

TREG

Formula

HOC2H4OH 

HO(C2H4O)2

HO(C2H4O)3

HO(C2H4O)4

Molecular mass

62.07

106.12 

150.17 

194.32 

Boiling point 101.3 kPa (°C)

197

245

287

327
Freezing point (°C)

-13 

-8

-7.2 

-6.2 

Density 20 °C (kg/m3)

1113

1116 

1123 

1246 

Viscosity 20 °C (mPa.s)

20.9

35.7

47.9

60.0

Degradation temperature (°C)

163 

162

206 

226 

Tags: DEG TREG glycol TEG Toxicity Flammability MEG