0 0. Pumps head increased. An organic solvent chemically related to ethylene glycol. Diethylene glycol, CH2OHCH2OCH2CH2OH, is similar in properties to MEG (mono ethylene glycol), but DEG has a higher boiling point, viscosity, and specific gravity. When this … Diethylene glycol is quite similar to ethylene glycol in toxicity, although without production of oxalic acid. Propylene glycol is less toxic and is considered when toxicity is a concern. When excessive doses are ingested, the typical effects to be expected are diuresis, thirst, loss of appetite, narcosis, hypothermia, kidney failure and death, depending on the severity of exposure. Casarett and Doull's Toxicology. How can one be so toxic and the other taken orally. Ethylene glycol is the most popular glycol in chemical industry. 0 0. Small changes in structure can make a big difference in toxicity – just think of the difference between ethanol and the much more toxic methanol. Both have high boiling points, 245 and 290 C., respectively. Chapman and Hall Combined Chemical Dictionary code number CTX90-I (ethylene glycol) and BGL75-B (diethylene glycol). The main difference between ethylene glycol and propylene glycol is that ethylene glycol is toxic whereas propylene glycol is moderately toxic. Glycerol is a specific alcohol containing 3 -OH groups. Ethylene glycol là một loại rượu có công thức hóa họcC2H6O2. Ethylene glycol appears in many common household items, such as laundry detergent, dishwasher detergent, cosmetics and paint. It produces ethylene glycol when processed. Like /ethylene glycol/, diethylene glycol is well absorbed in the GI tract, distributed throughout total body water and organs on the basis of blood flow ... Klaassen, C.D. The molecule may be hundreds or thousands of units long. It is also used in some industrial applications like antifreeze formulations, but in very small amounts. MEG is the raw material used in the production of polyester fiber, PET resins, alkyds, and unsaturated polyesters. In this case, the -OH groups on neighboring molecules are "condensed", yielding one molecule of water, and an "O-O" bond between the two molecules. A sweet, viscous liquid that was used to make the infamous elixir of sulfanilamide that proved fatal to over 100 children in 1937, leading to …

Diethylene glycol induced histologic changes within the kidneys without kidney oxalate deposition. ethylene glycol, diethylene glycol, triethylene glycol, 1,4-butanediol, 1,2-butanediol, 2,3-butanediol, 1,2-propanediol and 1,3-propanediol) in serum using a Schotten–Baumann derivatization by benzoyl chloride. Anonymous . Hence, small amounts may possibly pass unchanged with smoke from a cigaret into the body in addition to anything absorbed from the moist end of the cigaret in the mouth. Difference Between Ethylene Glycol and Diethylene Glycol April 10, 2018 Posted by Madhu Key Difference – Ethylene Glycol vs Diethylene Glycol The key difference between ethylene glycol and diethylene glycol is that an ethylene glycol molecule is an individual molecule whereas diethylene glycol molecule is formed by the combination of two ethylene glycol molecules via an ether bond. In this case all the functional groups of the isopropyl alcohol and ethylene glycol molecules have identical pka(s), therefore no reaction can take place. The use of this compound as a deicer and antifreeze agent leads to concerns of … Prominent by-products of this process are- triethylene glycol, tetramethylene glycol, and oligomers diethylene glycol. The difference in their application is dependant mainly to variations in physical properties. Hazardous Substances Data Bank (HSDB) 10.2 Metabolism/Metabolites. New Window. As a result, minor amounts of Diethylene Glycol (DEG) and Triethylene Glycol (TEG) is produced as a byproduct. Ethylene Glycol là gì 3. 1 decade ago. | Catalyst: Both acidic and basic catalysts are used for the production of ethylene glycol. However, it is very useful as a chemical and can be found in many household items such as detergents, cosmetics, etc. Key Difference – Ethylene Glycol vs Diethylene Glycol The key difference between ethylene glycol and diethylene glycol is that an ethylene glycol molecule is an individual molecule whereas diethylene glycol molecule is formed by the combination of two ethylene glycol molecules via an ether bond. Diethylene Glycol là gì 4. New York, NY: McGraw-Hill, 2008., p. 1019 . It is used as a raw material in the manufacture of polyester Fibers and Fabric Glycol. • Similarities and differences across these compounds are explained by metabolic pathways. polyethylene has multiple ethyl groups ethylene has one. Abstract. Propylene glycol is used as a solvent in commercial products as well as a diluent for oral, topical, and intravenous pharmaceutical preparations. Ethylene glycol solutions are normally preferred over Propylene Glycol because of their more desirable physical properties particularly at lower temperature. The Basic Science of Poisons. All alcohols having two or more of -OH groups are called glycol. These properties include viscosity, hygroscopicity and boiling point. The reaction is catalyzed by acidic or basic catalysts. What's the difference between ethylene glycol and polyethylene glycol? Ethylene Glycol is used to remove water vapor from natural gas. Source(s): 39 difference ethylene glycol polyethylene glycol: https://shortly.im/8VqH3. Ethylene glycol is commonly used in applications where efficiency is important and there is no human or animal contact due to the toxicity of the ethylene glycol chemistry. So sánh bên cạnh - Ethylene Glycol vs Diethylene Glycol ở dạng bảng 6. - Glucose, fructose and Sugars contain larger numbers of -OH groups but they are not termed as Glycols. ; Specifically , this alcohol as a fuel. Ethylene Glycol là gì? DEG is not corrosive and has a high flash point of between 309° to 617° Fahrenheit (154° to 325° Celsius) so it can be stored in stainless steel drums and does not easily catch fire. Ethylene Glycol has been known to be lethal in doses as low as 786 mg/kg. However, the polyethylene glycol is a POLYmer, a molecule that is formed from a base molecule (in this case, ethylene glycol), which is the "repeating unit" in the molecule. Ethylene Oxide reacts with water to produce Ethylene Glycol and can be explained with a chemical equation: C 2 H 4 O + H 2 O = HO-CH 2 Ch 2-OH. It is important that the … Main differences between propylene glycol and ethylene glycol: Between the two ethylene glycol is a better heat transfer fluid than propylene glycol. The information above is not contradictory as there is a big difference between ethylene glycol and diethylene glycol. Similar to ethylene glycol, diethylene glycol is used in antifreeze, brake fluids, and deicing solutions. (ed). Freezing point being around -10 C it's not effective as a practical antifreeze. Polyethylene glycol is produced by the interaction of ethylene oxide with water, ethylene glycol, or ethylene glycol oligomers. Diethylene glycol is used in the manufacture of unsaturated polyester resins, polyurethanes and plasticizers. In this initial phase, ethylene and oxides are fed together to a multi-tubular reactor forming ethylene oxides (EO). Ethylene glycol - diethylene glycol in ethoxylated substances EUROPEAN PHARMACOPOEIA 5.0 Split ratio: 1:200, alternatively splitless with temperature control (sample solutions need to be diluted 1/200 with a 50 mg/l solution ofbutylhydroxytoluene R in trimethylpentane R before injection). Ethylene glycol also serves as an antifreeze and a hydraulic brake fluid additive for automobiles. Drinking ethylene glycol causes the same feelings as drinking alcohol, but in a few hours the symptoms will turn into nausea, vomiting, convulsions and possibly coma. Alcohol-related intoxications, including methanol, ethylene glycol, diethylene glycol, and propylene glycol, may present with a high anion gap metabolic acidosis, with a decrease in serum bicarbonate and a rise in the osmolality, with an increased serum osmolar gap (i.e., difference between calculated and measured osmolality) (see also Chapter 106). It is more directly toxic to the kidneys than ethylene glycol. The IUPAC name for this compound is Propane-1,2-diol. What is the Difference Between Ethylene Glycol and Propylene Glycol – Comparison of Key Differences, Key Terms: Automotive Antifreeze, Chiral Carbon, Ethylene Glycol, Hygroscopic, Propylene Glycol, Racemic Mixture. Tóm tắt. Diethylene glycol is a colorless, liquid organic compound at room temperature produced by the interaction of ethylene glycol and triethylene glycol. Ethylene Glycol vs Diethylene Glycol: Ethylene glycol ແມ່ນເຫຼົ້າທີ່ມີສູດເຄມີ C2H6O2. Điểm tương đồng giữa Ethylene Glycol và Diethylene Glycol 5. Only monoethylene and diethylene glycol show evidence of developmental toxicity. polyethylene glycol is a laxative and ethethylene glycol is anti-freeze. Diethylene glycol (DEG) is a clear, colorless, odorless liquid with a sweet taste, and is an excellent solvent for water-insoluble chemicals and drugs. Primarily ethylene glycol production process comprises of following steps: Ethylene Oxide Production. Noun (en-noun) (organic compound) A simple aliphatic alcohol formally derived from ethane by replacing one hydrogen atom with a hydroxyl group: CH 3-CH 2-OH. In addition, it sometimes functions as a deicing agent for runways and planes. There is a difference in the mixing ratio, depending on whether it is ethylene glycol or propylene glycol. 7th ed. Ethylene glycol has superior heat transfer efficiency due to lower viscosity - but more fluid must be circulated to transfer the same amount of energy since Propylene glycol has higher specific heat. Diethylene glycol does decrease the freezing temperature, but generally is used for its other properties. To help you choose the correct glycol product please refer to the chart below. Bibliography. A tiny amount of ethylene glycol will probably not harm humans, but according to the National Library of Medicine, as little as 4 fl 2. For ethylene glycol, the mixing ratios are typically 30/70 and 35/65, whereas the propylene glycol mixing ratios are typically 35/65 and 40/60. • No significant risk of the ethylene glycols is expected under normal use patterns. • A matrix of toxicological commonalities and differences is presented. The aim of the present work is to propose an alternative to these GC methods, with an LC–MS-MS method for the simultaneous analysis of eight glycols (i.e. Polyethylene glycol is, in fact, used in antifreeze because it lowers the freezing temperature of water. On metabolic conversion it becomes oxalic acid, which is toxic to the kidney. Ethylene Glycol (EG) is produced by hydration of ethylene oxide. Propylene glycol, food or technical grade, is used in applications where human or incidental food contact is a concern. It is 1,2,3 trihydroxy propane. Ethylene glycol and its oligomers are preferable as a starting material instead of water, because they allow the creation of polymers with a low polydispersity (narrow molecular weight distribution). Help. DEG is used as a component of multiple different products including antifreeze preparations, cosmetics, lubricants, brake fluids, wallpaper strippers, heating/cooling fuel and as a plasticizer. As nouns the difference between ethylene and diethylene is that ethylene is (organic compound) the common name for the organic chemical compound ethene the simplest alkene, a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula c 2 h 4 while diethylene is (organic chemistry|in combination) two ethylene groups in a molecule. The substitution of diethylene glycol for glycerin as a hygroscopic agent in industry makes it desirable to compare the toxicity of these two chemicals. Viscosity: lower: higher: Propylene glycol increases major head loss in the systems. Even the electronic cigarettes that DO utilize polyethylene glycol (PEG) come nowhere near this mark.

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