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Information about Triethylene Glycol

Views: 0     Author: Site Editor     Publish Time: 2022-06-28      Origin: Site

At present, more than 25% of my country's ethylene production is used to produce EO/EG. Among them, triethylene glycol is an important by-product obtained when ethylene oxide is hydrated to produce ethylene glycol. The main function of trimethylene glycol is to be used as a dehydrating agent for natural gas, oilfield associated gas, and carbon dioxide, a solvent for nitrocellulose, rubber and resin, a desiccant, a lubricant, a plasticizer, etc., and can also be used for printing ink as a hygroscopic agent, softener, and as a disinfectant in air conditioning system cleaners. So what is the information about triethylene glycol? Let's take a look at it next.

Here is the content list:

l Properties of Triethylene Glycol

l Manufacturing method

l Recommended use

l Safety

Properties of Triethylene Glycol

Triethylene glycol is a colorless, transparent, slightly sweet, stable viscous liquid. Relative density 1.1274 (15°C), freezing point -7.2°C, boiling point 289.4°C, refractive index 1.4578 (15°C), ignition point 173.9°C, flash point 330°C (closed cup), ignition point 412.8°C, vapor pressure LPA (20°C). It is miscible with water, ethanol, benzene, and toluene, insoluble in ethers, and insoluble in petroleum ether. It has the oxygen and hydroxyl groups attached to the alkyl group, so it has the properties of alcohol and ether.

Manufacturing method

Ethylene oxide is hydrated to produce ethylene glycol, and the by-product trimethylene glycol accounts for about 0.5% to 1%.

Recommended use

Triethylene glycol can be used as a solvent for aromatic extraction, as a solvent for rubber and nitrocellulose, as a diesel additive, and as rocket fuel. In addition, it has a wide range of uses in medicine, paint, textile, printing and dyeing, food, paper, cosmetics, leather, photography, printing, metal processing, and other industries. It is commonly used as textile auxiliaries, solvents, plasticizers for rubber and resin, viscosity modifiers for lubricating oils, and aromatic hydrocarbon extractants for reforming fluids.


Triethylene glycol has low toxicity. The lower explosion limit in the air is 3.2%. The maximum allowable concentration in the air is long/m≈1.5×10-6, which is a low-toxicity, combustible and explosive organic matter, and should be placed in a ventilated, fire-proof, and rain-proof place. During transportation, it should be handled with care, handled from care to prevent a collision, kept away from fire sources, and operated by the national regulations on the storage and transportation of hazardous chemicals. This product leaks or contaminates the human body can be washed with plenty of water and can be extinguished with water, foam, sand, etc.

Triethylene glycol is very easy to absorb moisture. It should be packed in dry, clean aluminum or large barrels sprayed with aluminum on the inner wall. It can also be packed in galvanized closed iron drums. It is best to fill with nitrogen protection when packing 200kg per barrel. Store the product in a dry, ventilated place, moisture-proof, fire-proof, avoid exposure to sunlight, and keep away from fire and heat sources.

The above is the relevant information about triethylene glycol. If you are interested in triethylene glycol, you can contact us and we will give you a detailed introduction. Our website is www.hiseachem.com, we are looking forward to your arrival and hope to cooperate with you.

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