Triethylene glycol (TEG) is a colorless, odorless, sweet-tasting viscous liquid belonging to the polyol class of compounds. Its molecular structure contains three ethylene glycol units, and it has good water solubility, hygroscopicity, and chemical stability.
What is TEG (CAS 112-27-6) used for in oil and gas?
Triethylene glycol (TEG) is a colorless, odorless, viscous liquid with a high boiling point, strong hygroscopicity, low toxicity, and good chemical stability. These physicochemical properties make it widely and importantly used in industry, primarily in the natural oil and gas sectors.
Main Application: Dehydration of Natural Gas and Petroleum Gas
The most important industrial use of triethylene glycol is as a dehydrating agent for natural gas, liquefied petroleum gas (LPG), and other hydrocarbon gases. This application accounts for a large proportion of its industrial consumption. The core principle is to utilize its extremely strong hygroscopicity (it is miscible with water in any proportion and has a strong selective adsorption capacity for water) to achieve deep removal of moisture from the gas.
Is triethylene glycol (CAS 112-27-6) hazardous?
Industrial-grade triethylene glycol is an organic compound with the chemical formula C6H14O3, formed by the esterification of three glycerol molecules. It is commonly used as a solvent, antifreeze, lubricant, and stabilizer, and is widely applied in the chemical, petroleum, pharmaceutical, food, and cosmetic industries.
Industrial-grade triethylene glycol may pose health risks to humans and the environment under certain circumstances. For example, it is toxic; inhalation or excessive ingestion may cause symptoms such as difficulty breathing, nausea, vomiting, headache, and dizziness, and in severe cases, may even lead to coma and death. Furthermore, industrial-grade triethylene glycol may pollute water and soil, impacting the ecological environment.
Triethylene glycol Storage Conditions
To ensure the quality and stability of triethylene glycol, proper storage conditions are crucial. The following are the recommended storage conditions for triethylene glycol:
- Temperature: Triethylene glycol should be stored at room temperature (15-25℃), and should not exceed 30℃. High temperatures can easily decompose triethylene glycol, reducing its quality.
- Humidity: Triethylene glycol should be stored in a dry, well-ventilated environment, avoiding moisture. High humidity can cause chemical reactions in triethylene glycol, affecting its quality and efficacy.
- Light: Triethylene glycol should be protected from prolonged exposure to sunlight or other strong light sources. Ultraviolet rays in sunlight can degrade triethylene glycol, affecting its stability.
In addition to the above storage conditions, the following should also be noted:
- Avoid contact with free acids or acidic substances to prevent decomposition reactions.
- Avoid contact with alkaline substances to prevent gel precipitation.
- Storage containers should be colorless, odorless, and non-toxic glass bottles or polyethylene plastic bottles to avoid contamination or decomposition.
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Advantages
1) Small batch shipment and sub-packaging are available.
2). Provide COA, MSDS, Health Certificate, and Origin Certificate.
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