Mono-ethylene glycol – or MEG – is a vital ingredient for the production of polyester fibres and film, polyethylene terephthalate (PET) resins and engine coolants.
End uses for MEG range from clothing and other textiles, through packaging to kitchenware, engine coolants and antifreeze. Polyester and fleece fabrics, upholstery, carpets and pillows, as well as light and sturdy polyethylene terephthalate drink and food containers originate from ethylene glycol. The humectant (water attracting) properties of MEG products also make them ideal for use in fibres treatment, paper, adhesives, printing inks, leather and cellophane.
CAS #: 57-5-6
There are many uses for mono propylene glycol across many different industries and some chemical manufacturers produce two grades of MPG to meet these varied needs.
The first grade is used in the food, cosmetics, and pharmaceutical industries. MPG is used as a solvent for food colorings and flavorings, and is also a classified humectant food additive (E1520). In the personal care industry it is used as a moisturizer in make-up, shampoo, bubble bath and baby wipes, to name but a few examples. The pharmaceutical industry uses MPG as a solvent in oral, injectable, and topical formulations.
Industrial grade MPG also has a variety of uses but the main application is as an antifreeze and aircraft wing and runway de-icer. This is because the freezing point of MPG lowers upon mixing with water. It is also used in heat transfer liquids such as engine coolants.
It can also be used as a chemical intermediate in the production of high performance unsaturated polyester resins used in paints and varnishes. It is also an excellent solvent that is utilized in printing inks and it is also used in the manufacture of non-ionic detergents which are used in the petroleum, sugar-refining, and paper making industries. It can also be used in the cryonics industry and can be used as an additive in pipe tobacco as it prevents dehydration.
CAS #: 143-22-6
Applications for Diethylene Glycol:
Polyester Resins Antifreeze and Coolants Gas Dehydration and Treating Chemical Intermediates Heat Transfer Fluids
Triethylene glycol (TEG) and tetraethylene glycol (TETRA EG) may be used directly as a plasticizer, TEG and TETRA EG are used in the manufacture of:
- Safety glass
- Separation membranes (silicone rubber, polyvinyl acetate, cellulose triacetate)
- Ceramic materials (resistant refractory plastics, molded ceramics)
Demand for tetraethylene glycol is strong in the area of BTX (benzene, toluene, xylene) extraction to separate aromatic hydrocarbons from non-aromatic hydrocarbons.
Monoethylene glycol (MEG), diethylene glycol (DEG) are often used in water-based paints, dry-wall compounds, glass cleaners, dyes, waxes and adhesives as a freezing point depressor to avoid damage by low-temperature extremes.
In addition, mono-ethylene glycol and diethylene glycol are also used as binders for foundry sand molding, and a lubricant for glass- and cement-grinding. In addition, both homologs are also used as humectants in textile fiber, paper, leather, adhesive and glue applications.