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Topic: Glycol


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In the News (Mon 24 Jun 19)

  
  Diethylene Glycol (DEG)
Polyethylene glycols and polypropylene glycols are sometimes called polyglycols which are derived by polymerization of ethylene oxide and propylene oxide respectively.
Diethylene glycol (DEG) is derived as a co-product with ethylene glycol and triethylene glycol.
Glycols, having high boiling point and affinity for water, are employed as liquid desiccant for the dehydration of natural gas.
www.chemicalland21.com /arokorhi/petrochemical/DEG.htm   (724 words)

  
 Ethers glycol : toxicologie, prevention et controle avec INRS
La famille des éthers de glycol se compose de 80 substances chimiques, différentes quant à leurs caractéristiques, qui entrent dans la composition de nombreux produits.
Chaque éther de glycol possède des caractéristiques toxicologiques propres et certains dérivés ont une toxicité sur la reproduction mise en évidence dans des essais chez le rongeur, susceptible d'entraîner un risque pour l'homme ; les composés potentiellement dangereux sont de plus en plus substitués et les mesures réglementaires ont permis de réduire leur utilisation.
Document sur l'ethers de glycol issu de de la base de données Métropol, qui constitue un recueil de techniques de prélèvement et d'analyse des polluants présents dans l'air des locaux de travail.
www.inrs.fr /securite/ethers_glycol.html   (644 words)

  
  Ethylene glycol Summary
The addition of ethylene glycol to water causes the freezing point of the latter to decrease, thus the damage that would be caused by the water freezing in a radiator can be avoided by using a mixture of water and ethylene glycol as the coolant.
Ethylene glycol has become increasingly important in the plastics industry for the manufacture of polyester fibers and resins, including polyethylene terephthalate, which is used to make plastic bottles for soft drinks.
Ethylene glycol may be found as a contaminant in unlawfully distilled whiskey (moonshine) made in a still constructed using an improperly washed car radiator.
www.bookrags.com /Ethylene_glycol   (1762 words)

  
 Glycol Ethers
Some commonly used glycol ethers are listed on page 2, along with their abbreviations and chemical names, to help you identify which ones you may be working with.
Glycol ethers enter your body when they evaporate into the air you breathe, and they are rapidly absorbed into your body if the liquids contact your skin.
Liquid glycol ethers splashed into your eyes could be painful, but they are not likely to cause any lasting problems; you should flush your eyes thoroughly with water to minimize the effects.
www.dhs.ca.gov /ohb/HESIS/glycols.htm   (1836 words)

  
 Clinical Pathology of Ethylene Glycol Toxicosis
Glycolic acid is oxidized to glyoxide by either glycolic acid oxidase or lactic dehydrogenase.
Renal tubular damage due to the presence of toxic metabolites of ethylene glycol is primarily responsible for renal failure at this stage of toxicosis.
In patients that have died of suspected ethylene glycol toxicosis, a presumptive diagnosis may be made by the presence of calcium oxalate monohydrate crystals in residual urine or in kidney aspirates or imprints (Fig.
www.vet.uga.edu /vpp/clerk/Torres   (1995 words)

  
 Ethylene Glycol and Propylene Glycol: Health Information Summary
As a comparison of acute toxicity in animals, the dose of ethylene glycol that was lethal to 50 percent of rats ranged from 4,000-9,000 parts per million (ppm) of body weight compared to 8,000-46,000 ppm in rats given propylene glycol.
Propylene glycol is also less acutely toxic than ethylene glycol because the acidosis that it causes does not result in the formation of calcium oxalate crystals.
Because neither ethylene glycol nor propylene glycol has undergone a comprehensive evaluation of its carcinogenic potential, they would both be classified as Group D carcinogens, "inadequate evidence to classify," under the old U.S. Environmental Protection Agency (EPA) cancer guidelines and "inadequate information to assess carcinogenic potential" under the new guidelines.
www.des.state.nh.us /factsheets/ehp/ard-ehp-12.htm   (1098 words)

  
  Ethylene glycol - Wikipedia, the free encyclopedia
Ethylene glycol has become increasingly important in the plastics industry for the manufacture of polyester fibers and resins, including polyethylene terephthalate, which is used to make plastic bottles for soft drinks.
Victims of ethylene glycol poisoning who are still conscious may be given milk or water to drink to delay the effects of the poison.
Ethylene glycol may be found as a contaminant in unlawfully distilled whiskey (moonshine) made in a still constructed using an improperly washed car radiator.
en.wikipedia.org /wiki/Ethylene_glycol   (1054 words)

  
 Diol - Wikipedia, the free encyclopedia
Examples of vicinal diol compounds are ethylene glycol and propylene glycol.
Diols such as ethylene glycol are used as co-monomers in some polymerization reactions forming polymers such as certain polyesters and polyurethanes.
In glycol cleavage the C-C bond in a vicinal diol is cleaved with formation of two aldehyde groups.
en.wikipedia.org /wiki/Glycol   (323 words)

  
 ATSDR - ToxFAQs™: Ethylene Glycol
Ethylene glycol is a synthetic liquid substance that absorbs water.
The primary source of ethylene glycol in the environment is from run-off at airports where is used in de-icing agents for runways and airplanes.
The EPA has determined that exposure to ethylene glycol in drinking water at concentrations of 20 ppm for 1 day or 6 ppm for 10 days is not expected to cause any adverse effects in a child.
www.atsdr.cdc.gov /tfacts96.html   (1042 words)

  
 Glycol - Adding to chiller loop
Should a chiller require glycol freeze protection, adjustments may need to be made to several key components of the chiller to for trouble free operation.
This is done by using a glycol freeze table, provided by the glycol manufacture.
Because of this, it is recommended that enough glycol be added to prevent freezing or restricted flow as fluid reaches the outlet of the evaporator.
www.legacychillers.com /kb/default~action~detail~intID~21.asp   (1031 words)

  
 glycol - Encyclopedia.com   (Site not responding. Last check: )
The most important glycol is the simplest, ethylene glycol, or 1,2-ethanediol, CH OH, a slightly sweet-tasting, somewhat viscous liquid that is miscible with water.
Ethylene glycol can be esterified to form polyesters, e.g., Dacron, and can be nitrated to form an explosive used in mining.
Effect of glycol on movement of borate from fused borate rods.
www.encyclopedia.com /doc/1E1-glycol.html   (587 words)

  
 s030108a - Ethylene Glycol Poisoning - Fomepizole   (Site not responding. Last check: )
Pyrazole as an antidote for ethylene glycol poisoning.
In the past year, fomepizole (4-methylpyrazole) has been approved for use as an antidote in the treatment of ethylene glycol poisoning in adults, and the first article reporting the use of fomepizole in a pediatric ethylene glycol exposure was published.
As a result, the therapy of ethylene glycol poisoning in children is likely to change from the traditional approach of ethanol administration coupled with hemodialysis to the administration of fomepizole with or without hemodialysis.
www.emory.edu /WHSCL/grady/amreport/litsrch02/s030108a.html   (1445 words)

  
 Polyethylene glycol electrolyte solution Information on Healthline
Polyethylene glycol electrolyte (PEG) solution is a laxative solution intended to increase the amount of water in the intestinal tract and replace electrolytes that may be lost due to diarrhea.
Polyethylene glycol electrolyte solution is used to cleanse the bowel by inducing diarrhea before colonoscopy, barium x-ray, surgery, or other procedures.
Polyethylene glycol electrolyte solution is in the FDA pregnancy category C. This means that it is not known whether it will be harmful to an unborn baby.
www.healthline.com /multumcontent/polyethylene-glycol-electrolyte-solution   (667 words)

  
 Health effects of ethylene glycol and propylene glycol - Encyclopedia of Earth   (Site not responding. Last check: )
In this profile, ethylene glycol and propylene glycol are discussed together because they have very similar structures and physical properties, and can be used for many of the same purposes, although their toxic properties are very different.
The very small amounts of ethylene glycol that could be tasted or otherwise accidentally eaten (for example, by putting your fingers in your mouth) in situations other than intentionally or accidentally drinking ethylene glycol are not likely to cause serious illness or death.
Propylene glycol is generally considered to be a safe chemical, and is not routinely tested for, unless specific exposure, such as to a medicine or cosmetic, can be linked with the observed bad symptoms.
www.eoearth.org /article/Health_effects_of_ethylene_glycol_and_propylene_glycol   (2106 words)

  
 Glycol Ethers | Technology Transfer Network Air Toxics Web site | US EPA
Glycol ethers have many uses; these include use as solvents and as an ingredient in cleaning compounds, liquid soaps, and cosmetics.
The glycol ethers are used as solvents for resins, lacquers, paints, varnishes, gum, perfume, dyes, inks, as a constituent of paints and pastes, cleaning compounds, liquid soaps, cosmetics, and hydraulic fluids.
There are many glycol ether compounds; however, this fact sheet focuses on the three glycol ether compounds for which there is the most toxicological information.
www.epa.gov /ttn/atw/hlthef/glycolet.html   (1491 words)

  
 Glycol Heaters (Water Bath Heaters)
All glycol heaters use ethylene glycol, mixed with water.
The glycol used in glycol heaters is clear
ethylene glycol had offspring with birth defects; male animals had diminished sperm counts.
www.bruestcatalyticheaters.com /html/glycol_heaters_vs_bruest_catalytic_heaters.html   (550 words)

  
 Dipropylene Glycol Methyl Ether
Before a worker is placed in a job with a potential for exposure to dipropylene glycol methyl ether, a licensed health care professional should evaluate and document the worker's baseline health status with thorough medical, environmental, and occupational histories, a physical examination, and physiologic and laboratory tests appropriate for the anticipated occupational risks.
Determination of a worker's exposure to airborne dipropylene glycol methyl ether is made using a charcoal tube (100/50 mg sections, 20/40 mesh).
Clothing contaminated with dipropylene glycol methyl ether should be removed immediately, and provisions should be made for the safe removal of the chemical from the clothing.
www.osha.gov /SLTC/healthguidelines/dipropyleneglycolmethylether/recognition.html   (3567 words)

  
 Disease - Ethylene glycol intoxication - Detroit, Michigan
Ethylene glycol may be ingested accidentally, or it may be consumed deliberately in a suicide attempt or as a substitute for drinking alcohol (ethanol).
The first effect of ethylene glycol ingestion is a sense of inebriation similar to the feeling caused by drinking alcohol (ethanol).
Ethylene glycol toxicity should be suspected in anyone who is severely ill after drinking an unknown substance, especially if they initially appear drunk without the characteristic breath odor of drinking alcohol (ethanol).
www.henryfordhealth.org /15367.cfm   (679 words)

  
 Long Draw Draft Beer Glycol Systems   (Site not responding. Last check: )
All glycol power packs are for Long Draw Systems and are Special Order and will be shipped from our supplier directly to you by truck only.
The heart of any long draw system is the glycol power pack which is capable of delivering ice cold beer, wine, soda or juice 25 to 500 or more feet from your walk-in cooler.
Glycol Power Pack Systems to continually cool the beer lines, serving towers and stations to maintain freshness and prevent foam.
www.angelfire.com /ct/kegman/glycol.htm   (922 words)

  
 MedlinePlus Medical Encyclopedia: Ethylene glycol intoxication
Ethylene glycol may be swallowed accidentally, or it may be taken deliberately in a suicide attempt or as a substitute for drinking alcohol (ethanol).
Ethylene glycol toxicity should be suspected in anyone who is severely ill after drinking an unknown substance, especially if they initially appear drunk and do not have a smell of alcohol on their breath.
In severe cases, a procedure called hemodialysis (dialysis) may be used to directly remove the ethylene glycol and other poisonous substances from the blood.
www.nlm.nih.gov /medlineplus/ency/article/000774.htm   (695 words)

  
 eMedicine - Toxicity, Ethylene Glycol : Article Excerpt by: Daniel C Keyes, MD, MPH
Ethylene glycol is a relatively common cause of overdose in American emergency departments.
Although the parent compound, ethylene glycol, may cause some alteration of mental status, it is a relatively nontoxic compound before it is metabolized.
A profound acidosis often ensues and is attributable to the glycolic acid in circulation.
www.emedicine.com /emerg/byname/toxicity-ethylene-glycol.htm   (638 words)

  
 Ethylene & Propylene Glycol Ethers Panels Information Update
However, the other commercially available glycol ethers (the higher molecular weight ethylene glycol ethers and the propylene glycol ethers marketed by Panel members) have been rigorously assessed by expert government scientists.
Much of the French media coverage refers to all glycol ethers without noting that the recent concerns about reproductive and developmental toxicity raised by animal studies, and by alleged health effects in the semiconductor industry, relate only to ethylene glycol methyl and ethyl ethers, and their acetates (EGME, EGEE, EGMEA and EGEEA).
The Ethylene and Propylene Glycol Ethers Panel of the American Chemistry Council and its member companies believe that this document is, as of the date of its publication, a technically accurate summary of available scientific information.
www.egep.org /epge-update.htm   (573 words)

  
 Ethylene Glycol
Ethylene glycol is non-toxic, but is metabolized by alcohol dehydrogenase, found in the hepatocytes, into four toxic byproducts: glycoaldehyde, glycolate, glycolic acid, and glyoxylate.
Approximately 20% of ethylene glycol is excreted unchanged in the urine.
Pyridoxine may inhibit metabolism of glycolic acid to oxalic acid by acting as cofactor in metabolism of glycolic acid to nonoxalate byproducts.
www.iowapoison.com /index.asp?pageID=155   (995 words)

  
 Ethylene Glycol
In an ethylene glycol poisoning, once crystals are found in the urine, kidney damage has already begun.
Before or after that time period, a false negative test result may be obtained since either the ethylene glycol has not yet entered the bloodstream, or it has already been broken down into its metabolites.
Cats: 0.64 ml per pound of body weight (1 teaspoon of ethylene glycol diluted 50:50 with water in radiator fluid is toxic to the average-sized cat).
www.peteducation.com /article.cfm?cls=2&cat=1938&articleid=2242   (656 words)

  
 Propylene Glycol - The Compounder Pharmacy - Aurora, IL - 630-859-0333   (Site not responding. Last check: )
With just a little investigation we found that the culprit may be propylene glycol.
This seemed to be evidence against the propylene glycol.
Two complaints out of thousands of compounds does not prove conclusively that propylene glycol is generally harmful.
www.thecompounder.com /compoundingpropyleneglycol.html   (310 words)

  
 Propylene glycol (PIM 443)
The toxicity of propylene glycol is mainly due to the parent compound and not to its metabolites.
Since the metabolites of propylene glycol are less toxic than the parent substance, inhibition of the metabolism of propylene glycol by ethanol or 4-methyl pyrazole is unnecessary.
Kelner MJ, Bailey DN (1985) Propylene glycol as a cause of lactic acidosis.
www.inchem.org /documents/pims/chemical/pim443.htm   (4111 words)

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