Triethylene glycol

• Triglycol
• Triglycol
• Triethylene
• TEG
• 2,2 '- ( ethylenedioxy ) diethanol

Colorless, hygroscopic, almost odorless liquid

Liquid

1.12 g · cm -3 ( 20 ° C)

-7 ° C

291 ° C

0.3 Pa ( 20 ° C)

Miscible with water

1.4531 (20 ° C)

Attention

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Triethylene belongs to the group of glycols.

Production

Triethylene glycol is prepared by the ethoxylation of diethylene glycol. In general, it is a by- product of ethylene production.

Use

There is only limited use as solvents in chemistry. Due to its high boiling point, it is for reactions that occur at high temperature ( > 200 ° C), such as the Wolff-Kishner reaction, are used.

It is furthermore an important intermediate in the chemical industry, for example in the production of polyester resins. Use is triethylene next cyclodextrin derivatives as odor neutralizer (Air Sanitizer ). In addition Triglycol acts ventilation and air -drying and bacteria resistant at the same time, since the dehydrogenating property bacteria that come with TEG in the air in contact, dry out and die. In hospitals, the room air is disinfected with Triglycol. The dosage used in this case is much higher than in the commercially offered aerosol sprays for the household.

TEG is also used in brake systems and hydraulic systems use. TEG is also used for dehumidification and drying of natural gas, or to adjust its water dew point.

Partial triethylene glycol is also called as an ingredient of fog fluids, such as is the case with the manufacturer Euro Lite.

The tobacco regulation allows the use of triethylene glycol as a humectant in tobacco products.