SUPPLIER OF ETHYLENE GLYCOL FOR AUTOMOTIVE INDUSTRY FROM DUBAI UAE

Ethylene Glycol

ETHYLENE GLYCOL

Ethylene glycol is also known as glycol, 1,2-ethylene glycol, or EG for short. The chemical formula is (CH2OH)2, which is the simplest diol. Ethylene glycol is a colorless, odorless, sweet liquid with low toxicity to animals. Ethylene glycol is miscible with water and acetone, but its solubility in ethers is small. Used as solvent, antifreeze and raw material for synthetic polyester. Polyethylene glycol (PEG), a high polymer of ethylene glycol, is a phase transfer catalyst and is also used in cell fusion. (CH2OH)2 is a colorless, odorless, sweet liquid with low toxicity to animals. Ethylene glycol can interdissolve with water and acetone, but it has less solubility in ethers. Used as a solvent, antifreeze, and a raw material for synthetic polyester. High glycol polyethylene glycol (PEG) is a phase transfer catalyst also used for cell fusion; its nitrate is an explosive.

APPLICATION OF ETHYLENE GLYCOL

It is mainly used for making polyester, polyester, polyester resin, hygroscopic agent, hygroscopic agent, plasticizer, surfactant, synthetic fiber, cosmetics and explosives, and used as dyes, ink and other solvents, preparation of engine antifreeze, gas dewatering agent, manufacturing resin, can also be used in cellophane, fiber, leather, adhesive wetting agent. Can produce synthetic resin PET, fiber grade PET, namely polyester fiber, bottle sheet grade PET is used for making mineral water bottles, etc. Also can produce alkyd resin, glyoxal, and so on, but also used as antifreeze. In addition to being used as an antifreeze agent for automobiles, it is also used for the transportation of industrial cooling capacity, generally known as the carrier cooling agent, and at the same time, it can also be used as water as a condensate agent.

Ethylene glycol methyl ether series products are advanced organic solvents with excellent performance, used as solvent and thinner for printing ink, industrial cleaning agent, paint (nitrofiber paint, varnish, porcelain paint), copper coating plate, printing and dyeing; can be used as raw materials for chemical products such as pesticide intermediates, pharmaceutical intermediates and synthetic brake fluid; as electrolyte for electrolytic capacitor, leather chemical fiber dye, etc. It is used as textile additives, synthetic liquid dyes, as well as fertilizer and desulfurizer in oil refining production.

ETHYLENE GLYCOL SHOULD BE NOTED WHEN USED AS A LOAD COOLING AGENT:

1. The freezing point changes with the concentration of (CH2OH)2 in aqueous solution. When the concentration is below 60%, the concentration of EG in aqueous solution increases and the freezing point decreases, but after the concentration exceeds 60%, with the increase of EG concentration, the freezing point is rising, and the viscosity will also increase with the increase of the concentration. When the concentration reaches 99.9%, its freezing point rises to-13.2℃, which is an important reason why the concentrated antifreeze liquid (antifreeze mother liquor) cannot be directly used, and must attract the attention of users.

2. Ethylene glycol contains hydroxyl group, working at 80 degrees Celsius-90℃ for a long time, EG is first oxidized to glycolic acid, and then oxidized to oxalic acid, that is, acetic acid acid (oxalic acid), contains two carboxyl groups. Oxalic acid and its side products first affect the central nervous system, then the heart, and then the kidneys. EG diacetic acid, causing corrosion to the equipment and leakage. Therefore, in the prepared antifreeze liquid, there must also be preservatives, to prevent the corrosion of steel and aluminum and scale generation.

PHYSICAL PROPERTY

• Steam pressure: 0.06 mmHg (20℃)
• Viscosity: 25.66 mPa.s (16℃)
• Heat of combustion: 1180.26 kJ / mol
• Spontaneous combustion point: 418℃
• critical temperatures:372℃
• Critical pressure: 7,699 kPa
• Critical molar volume: 186C3 / mol
• Eccentricity factor: 0.27
• Surface tension: 46.49 m N/m (20℃)’
• Solubility: miscible with water / ethanol / acetone / pyridine acetate, slightly soluble in ether, insoluble in petroleum hydrocarbons and oils, can dissolve calcium chloride / zinc chloride / sodium chloride / potassium carbonate / potassium chloride / potassium iodide / potassium hydroxide and other inorganic substances.
• At 25 degrees C, the dielectric constant is 37.
• It is easy to absorb moisture at high concentration.

METHODS OF ETHYLENE GLYCOL PRODUCTION

VIA ETHYLENE OXIDE

This compound is produced from ethylene oxide as an intermediate. Ethylene oxide reacts with water to produce ethylene glycol according to the following chemical equation:

C2H4O + H2O → HO–CH2CH2 –OH

This reaction can be catalyzed by acids or bases or can be carried out at neutral pH at elevated temperature. Its highest yield is obtained at acidic or neutral pH with a large amount of water. Under these conditions, 90% ethylene glycol can be obtained.

During this process, some by-products are formed, including diethylene glycol (DEG) and triethylene glycol (TEG), which are separated by distillation.

The main uses of this chemical compound are as an antifreeze, which accounts for more than 50% of its commercial use, and as a raw material in the production of polyester fibers and plastics, mainly PET, which accounts for 40% of its total consumption. Since this material is cheaply available, it has many specific applications.

VIA ETHYLENE

This compound is also produced by the hydroxylation of ethylene. When ethylene is mixed with Bayer’s reagent (a cold dilute alkaline solution of potassium permanganate), hydroxylation occurs at both carbon atoms.

VIA OXALIC ESTERS

Oxalic esters form this compound during reduction with sodium and alcohol.

CHEMICAL PROPERTY

Because of the low molecular weight, active nature, it can be esterification, etherification, alcoholization, oxidation, acetal, dehydration and other reactions. Similar to ethanol, it can mainly react with inorganic or organic acids to produce esters. Generally, only one hydroxyl group reacts first. After increasing the temperature and increasing the amount of acid, both hydroxyl groups can form esters. If reacted with the nitric acid mixed with sulfuric acid, the dinitrate is formed. Acyl chloride or anhydride readily causes two hydroxyl groups to form esters. When (CH2OH)2 is heated under the action of catalyst (manganese dioxide, alumina, zinc oxide, or sulfuric acid), intra-molecular or intermolecular water loss may occur. Ethylene glycol can interact with alkali metals or alkali soil metals to form alcohol salts. When the metal is usually dissolved in the diol, only a single alcohol salt; if the alcohol salt (such as ethylene glycol monosodium) is heated in the hydrogen flow to 180~200 C, ethylene glycol disodium and EG can be formed. In addition, use ethylene glycol with 2mol sodium methanol to obtain ethylene glycol diodium. Didium glycol reacts with halogenanes to produce EG  monoether or double ether. Disodium EG reacts with 1,2-dibromoethane to form a dioxygen ring. In addition, EG is also easy to oxidation, with the different oxidant or reaction conditions used, can produce various products, such as glycolaldehyde HOCH2CHO, glyoxal OHCCHO, glycolic acid HOCH2COOH, oxalate HOOCCOOH and carbon dioxide and water. EG, unlike other diols, can undergo carbon chain breakage upon periodate oxidation. Ethylene glycol is often used instead of glycerol. In the tanning and pharmaceutical industries, used as hydration and solvents, respectively. Dinitrate, a derivative of EG, is an explosive. Single ether or single ether of EG  are good solvents, such as HOCH2CH2OCH3, a fiber-soluble fibers, resins, paints, and many other organic matter. Ethylene glycol has a strong dissolution capacity, but it is easy to metabolism and oxidation to produce toxic oxalic acid, so it cannot be widely used as a solvent.

WHEN SHOULD ETHYLENE GLYCOL NOT BE USED?

• Aerosol applications such as room fog, linen spray, pepper spray, air disinfectant
• Fuels used to heat food and antifreeze for use on sidewalks and pedestrians
• To produce deicers or anti-icing products for use on aircraft or runways

ETHYLENE GLYCOL ANTIFREEZE

This compound interferes with the hydrogen bond network in pure water. Water freezes at 0°C and pure ethylene glycol at -12°C, but a mixture of the two freezes at much lower temperatures – the lowest temperature reaches -55°C in mixtures containing 70% (CH2OH)2. This means that if such a mixture is used in a car’s cooling system, it will not solidify, even in very cold winter temperatures. This property is also used in deicing liquid on windshields or the exterior surfaces of aircraft.

ETHYLENE GLYCOL AND WATER MIXTURE

The mixture of ethylene glycol and water is known in the chemical industry as glycol concentrate and solution, which has many applications. This mixture is usually used as antifreeze due to its low freezing point.

INDUSTRIAL ETHYLENE GLYCOL

Industrial ethylene glycol is one of the grades of this widely used chemical compound that is used in various industries.

TYPES OF ETHYLENE GLYCOL

Monoethylene glycol (MEG), diethylene glycol (DEG) and triethylene glycol (TEG) are types of this chemical, each of which has different uses and properties in industries.

POLYETHYLENE GLYCOL

Polyethylene glycol is a compound with the general formula C2nH4n+2On+1 that is used in the formulation of cosmetic products, oils, paint carriers, glosses, softeners, etc.

IS ETHYLENE GLYCOL AN ALCOHOL?

It is a widely used organic compound used in many industries. Its most well-known use is as an antifreeze in automobiles.

ETHYLENE GLYCOL SAFETY AND DANGERS

• When using car antifreeze, you may be exposed to ethylene glycol through skin contact. According to the U.S. Centers for Disease Control (CDC), skin contact in very small amounts is unlikely to affect your health.
• The U.S. Food and Drug Administration (FDA) has approved the compound as an indirect food additive for use as a component of adhesives used in food packaging.
• Ingestion of the compound can cause serious illness. The first sign of oral ingestion is similar to the feeling of drinking alcohol (ethanol). Other symptoms may include nausea, vomiting, seizures, lethargy, or unconsciousness, according to the CDC. If you suspect possible poisoning, seek medical attention.
• Inhalation at room temperature is unlikely due to the low volatility of the chemical, but it can occur when the liquid is heated or sprayed into the air. Ethylene glycol is a mild irritant to mucous membranes or skin and is absorbed slowly and very poorly through the skin.
• The compound is rapidly absorbed after ingestion, which is the most dangerous route of exposure. Oral ingestion of this substance results in systemic toxicity, beginning with CNS effects, followed by cardiopulmonary effects, and ultimately renal failure.
• Renal failure, including acidosis and hypocalcemia, may occur following ingestion of this substance. It can also cause kidney, brain, liver, and blood vessel damage if ingested in large amounts, which can be fatal.

PACKING, STORAGE AND TRANSPORTATION

Package in galvanized iron barrels, 100 Kg or 200 Kg per barrel. Storage should be sealed, long-term storage to nitrogen sealing, moisture-proof, fireproof, anti-freezing. Storage and transport according to flammable chemicals.

For a long-term business, please don’t hesitate to contact.