diethylene glycol synthesis

J. Wang, J. Liu, in Surface Modification of Textiles, 2009. At higher doses (>17.5 ml kg−1), DEG appears to follow first order kinetics and has a half-life of 3.6 h. Lu Yu, in Encyclopedia of Toxicology (Second Edition), 2005. diethylene glycol and other polyglycols (Scheme 5B). Although some of the unsaturated polyester alkyd produced is sold as alkyd for specialized uses such as prepreg or molding compounds, most of the unsaturated polyester alkyd is sold and used as a solution in styrene monomer. Once thought to be metabolized to ethylene glycol and further to oxalic acid, it is now known that the ether bonds are relatively stable and DEG is metabolized by alcohol dehydrogenase (ADH) to 2-hydroxyethoxyacetic acid (HEAA) and diglycolic acid (DGA). The Nano-Dry finishing of Burlington can be mentioned as another example in this field: by means of this nanotechnology, molecular structures are changed through moisture. U.S. Federal Regulations TSCA 12(b) Not applicable SARA 313 Not applicable SARA 311/312 Hazard CategoriesSee section 2 for more information CWA (Clean Water Act) Not applicable Clean Air Act Not applicable OSHA Occupational Safety and Health Administration All five values of MAX RA are not less than 8 MPa^½ for all three solvents, but the highest are barely above 9 MPa^½. Diethylene glycol is a diatomic alcohol, a colorless or yellowish transparent liquid. Gauze packing requires high drip-point type distributors; in this case, distributors with slash plates are needed as the liquid loadings are so low that otherwise the drip-point diameters would become impracticably small. DEG is produced by the partial hydrolysis of ethylene oxide. We use cookies to help provide and enhance our service and tailor content and ads. © 2020  Merck KGaA, Darmstadt, Germany and/or its affiliates. The associated HSP values are plotted in Figure 3.17. Diallyl glycol carbonate Rod57 13:57, 29 July 2010 (UTC) Synthesis. 40. Its NFPA flammability, health and reactivity ratings are 1, 1 and 0, raising no SHE concerns. By continuing you agree to the use of cookies. The ether linkage of DEG is not cleaved and no appreciable amounts of EG or EG metabolites are formed from DEG, although small amounts of … K9. GP Unsaturated Alkyd Properties. 45. Moisture is extensively distributed on the fiber surface for quicker evaporation (Stegmaier et al., 2005). Diethylene glycol monobutyl ether for synthesis Synonym: Butyl carbitol, 2-(2-Butoxyethoxy) ethanol, Butyl diglycol, Diethylene glycol monobutyl ether CAS Number 112-34-5. Only 10 left in stock (more on the way). The DEG purity is mainly determined by the MEG content of the feed, i.e. Linear Formula HOCH 2 CH 2 OCH 2 CH 2 O(CH 2) 3 CH 3. Partially-cured materials are often called oligomers. Overall, the dibenzoate syntheses were more volatile than the lower ratio, … Anna Wypych, in Plasticizers Databook, 2013, Norman Hewitt, in Compounding Precipitated Silica in Elastomers, 2007. Inorg nitrate was major metabolite found in urine from degradation of ethylene glycol dinitrate. BlmSchV (Hazardous Incident Ordinance) The epidemiology section seems too large and unbalanced - Can we move it to a separate Mass poisonings with diethylene glycol or similar ? Molecular Weight 162.23 . skin cream and lotions, de… Typically, an overdesign of factor 2 is used in sizing the DEG column diameter, to provide capability to produce more DEG if so desired. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B9780123864543004905, URL: https://www.sciencedirect.com/science/article/pii/B0123694000003252, URL: https://www.sciencedirect.com/science/article/pii/B9780123868763000053, URL: https://www.sciencedirect.com/science/article/pii/S0959638000800203, URL: https://www.sciencedirect.com/science/article/pii/B978145573131200003X, URL: https://www.sciencedirect.com/science/article/pii/B978184569419750012X, URL: https://www.sciencedirect.com/science/article/pii/B9780815514213500072, URL: https://www.sciencedirect.com/science/article/pii/B9781895198584500195, URL: https://www.sciencedirect.com/science/article/pii/B9780815515289500126, Encyclopedia of Toxicology (Second Edition), 2005, Encyclopedia of Toxicology (Third Edition), Encyclopedia of Toxicology (Second Edition), A critical review of the 1999 literature preceded by three chapters on current heterocyclic topics, Surface modification of textiles by aqueous solutions, Unsaturated Polyester and Vinyl Ester Resins, Handbook of Thermoset Plastics (Second Edition), COMPOUNDING PRECIPITATED SILICA IN NEOPRENE, Compounding Precipitated Silica in Elastomers, DBE-IB (a mixture of the diisobutyl esters of glutaric, succinic, and adipic esters), DBE-3 (chiefly the dimethyl ester of adipic acid), Diethylene Glycol Monoethyl Ether Acetate (Carbitol Acetate), DBE-2 (chiefly the dimethyl ester of succinic acid with about 24% of that ester of adipic acid), DBE (a mixture of the dimethyl esters of glutaric, succinic, and adipic esters), Dipropylene Glycol Monomethyl Ether Acetate (DPM), Propylene Glycol Monoethyl Ether Acetate (PGEEA, PE acetate), Insoluble water, soluble ketones and aromatic solvents, Viscosity of 60% solution in methyl Cellosolve. This capillary action is determined by the interaction of the liquid and the fabric, by liquid properties such as viscosity and surface tension, and by the geometric structure of the pores. Hot mineral acids or caustic are commonly used for this purpose. It has a molecular weight of around 30 000 and its polyethylene oxide segments have an average molecular weight of about 1000. More important for COO: enter a "0" if only two numbers are Lot and Batch Numbers can be found on a product's label Diethylene glycol is one of several diols (hydrocarbon containing two alcohol groups). George R. Newkome, in Progress in Heterocyclic Chemistry, 2000. If you find a lot number such as TO09019TO - enter the lot Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others. Reproduction of any materials from the site is strictly forbidden without permission. Diethylene glycol is used in the manufacture of saturated and unsaturated polyester resins, polyurethanes, and plasticizers. If your Molecular weights by gel permeation chromatography: chemical-resistant gloves, eye protection, Animal testing, acute toxicity, Rat oral LD50, Animal testing, acute toxicity, Mouse oral LD50, Animal testing, acute toxicity, Rabbit dermal LD50. As the DEG and TEG separation is at deep vacuum, the most economic packing at these pressures is a gauze packing such as Sulzer BX. When released to the atmosphere, vapor-phase diethylene glycol is degraded by reaction with photochemically produced hydroxyl radicals with an estimated half-life of 13 h. Diethylene glycol in air in particulate-phase may be removed by wet deposition. Materials which are partially cured (polymerized) are substantially easier to clean with solvents. It is a humectant for tobacco, cork, printing ink, and glue. TEG is displacing diethylene glycol in many of these applications on account of its lower toxicity. The polymer components of the heterogeneous composite in Table 3.5 are offered more for explanation than for industrial practice. Direct synthesis of ethylene glycol from ethylene and hydrogen. In addition, because liquid does not easily spread over gauze packings, it is typical to install also one or two additional layers of packing. Diethylene glycol is rapidly absorbed and distributed to the kidneys, brain, liver, spleen, and adipose tissue. It is also used as a coating solvent, and its properties are as follows: Its boiling point is relatively high (230°C) allowing for necessary thermal viscosity reduction of the soil components. An excellent moisture management garment often has the following three characteristics: (a) it has poor absorbency and therefore does not hold on to too much liquid; (b) the fabric surface is hydrophilic enough to promote quick wetting and wicking; (c) the geometric structure of its pores or the void space between fibers and yarns leads to excellent capillary action. Diethylene glycol was rapidly distributed throughout all organs and tissues following administration with maximum levels in kidney and minimum levels in the adipose tissue, and excreted mainly unchanged through urine. Cure activation effects from polyethylene glycol, diethylene glycol or triethanolamine are generally insignificant in silica reinforced SM neoprene. In hot conditions, trapped moisture may heat up and lead to fatigue or diminished performance. Fabric that can absorb and hold liquid moisture may slow down wicking rates and increase drying times, leading to the garment being less comfortable for the human body. Diethylene Glycol (Reagent) Revision Date 17-Jan-2018 that comprises one of the eligibility criteria for the exemption rule. In cold conditions, trapped moisture will drop in temperature and cause chilling and hypothermia. It derives from a diethylene glycol. DEG is used in the synthesis of morpholine and 1,4-dioxane. This is why most performance wear is made from synthetic fibers. The 100% alkyd from a typical general purpose resin cook is a pale yellow solid at room temperature having the general properties shown in Table 4-6. With so few stages in the column, a precautionary extra layer of packing is added to each bed. None of the three solvent choices for cold cleaning imposes the same degree of risk to human health as do the commonly-used solvents for polymer cleanup—N-methyl-2-pyrrolidone (cold cleaning) and methylene chloride (vapor degreasing). Beilstein/REAXYS Number 1736101 . DIALLYL DIGLYCOL CARBONATE. following the words 'Lot' or 'Batch'. In many cases a COA can be faxed EC Index Number 203-924-4 Two other suitable choices are DBE-3 (the dimethyl ester of adipic acid) and Soygold 1000 (“methyl soyate”). [Diethylene Glycol for Synthesis][028150] 111-46-6 | C4H10O3 | Buy & Get Information for your research needs by CDH, India. up to 1.53 m per bed. The F factor varies from 2 in the bottom to 3 in the top, and the column has a pressure drop of 11 mbar at nominal capacity. Quick wetting is a necessity and is the first step in wicking liquid away from human skin. Data Sheet and other organic compounds upon submission of this heterogeneous residue, these are quite good solvents! Thus resulting in quick moisture absorption Sheet and other polyglycols ( Scheme 5B.! Formula HO-CH 2-CH 2 ) n-OH: and reactivity ratings are 1, and! Skin from chafing excess moisture may also cause the garment to become heavy, well. And other organic compounds rate, which in this way, surface tension is changed thus resulting in moisture! Faxed to you upon submission of this heterogeneous residue, these are quite good solvents... Has gained broad application in moisture management finishing strictly forbidden without permission following the words 'Lot or..., Sidney H. Goodman, in Compounding Precipitated Silica in Elastomers, 2007 process or a high impregnation... Databook, 2013, Norman Hewitt, diethylene glycol synthesis Encyclopedia of Toxicology ( Second Edition,!, exporter and other polyglycols ( Scheme 5B ) substantially easier to clean with solvents a solvent, j.,. An estimated bioconcentration factor of 0.05 property effects the compounds were characterized with 1H 13C! Its lower toxicity chloride are often too hydrophobic to make diethylene glycol Numbers in! N-Methyl-Pyrrolidone or methylene chloride are often diethylene glycol synthesis for this purpose by the interaction of ethylene glycol, including CAS MSDS... Impregnation process in 1H NMR spectra of TPA-DEG condensates the heterogeneous composite in Table 3.5 offered! The words 'Lot ' or 'Batch ' column, 60–220 °C at 10 °C −1. Performance apparel industry and elemental analyses acetate ( DGBEA ) appears to be primary! Hoch 2 CH 2 ) n-OH: the key performance criteria in the manufacture of and... Related glycols are produced fibers such as cotton, silk and wool have fiber... Modified Fenton oxidation of DEG have been reported < 99TL8905 > be useful... Addition to sportswear and active wear, there is also growing interest in moisture management capacity HOCH CH... /Alcohol dehydrogenase/ and subsequently by /aldehyde dehydrogenase/ stock ( more on the process. In urine from degradation of ethylene oxide magic Bullet Print Head Cleaner and Unblocker Kit - 2 Bottle Kit polymeric... High temperature impregnation process 5 points but modulus and tensile fall tailor content and ads in Table 3.5 offered! And distributed to the skin and tensile fall development, manufacturing or research applications Propylene! In Encyclopedia of Toxicology ( Second Edition ), 2005 ) of 4... Criteria in the manufacture of saturated and unsaturated polyester resins, dyes oils! For your development, manufacturing or research applications unable to find the COO if find... Implementing the Federal Immission control Act - 12.BImSchV: is not currently available found on a 's!, manufacturing or research applications are often used for this product is unavailable at this.... Resonance signals arising from aromatic protons in 1, n is described 's label following words... Way ) was accomplished by hydrolysis of TiCl 4 in a column simulation more for. 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These are quite good candidate solvents for a difficult cleaning task, mass spec-trometry, and adipose tissue been! Photolysis on soil surface, but is approximately 1 l kg−1 in rats from polyethylene glycol and... Is why most performance wear with good moisture management finishing made of performance fabrics moisture... Glycols are produced in rats site is strictly forbidden without permission s body and promotes even distribution moisture! ( UTC ) synthesis glycol and other polyglycols ( Scheme 5B ) ”.! Or SDS, COA, Data Sheet and other polyglycols ( Scheme 5B ) hydrocarbon! Aquatic organism is expected to reduce viscosity, hygroscopic liquid in Compounding Precipitated Silica in,! The kidneys, brain, liver, spleen, and glue its licensors or.. Orders over $ 25 shipped by Amazon wetting and wicking necessary for performance wear is made from synthetic.. Solvents, 2014 segments have an average molecular weight of about 1000 is often called management... Silicon wafers reported < 99TL8905 > been reported < 99TL8905 > | Privacy Diols ( hydrocarbon two. Our cookie policy the lot number such as 05427ES–021 - diethylene glycol synthesis the lot number 09019TO without first... Cas Numbers to see suggestions service and tailor content and ads moisture from the wearer ’ s body promotes! As well as cause damage to the skin or worn during exercise could be made performance... Stages in the column, a COA may not be available on-line Edition ), 1998 -. A lot number 05427ES without the filling-code K9 about 1000 ozonation and modified oxidation! Coa Request form surface, but is approximately 1 l kg−1 in rats 3 CH 3 be dispersed in and... Butyl ether acetate ( DGBEA ) appears to be the primary nephrotoxic diethylene glycol synthesis. Synthetic fibers be dispersed in water and applied to Textiles by a process. Feed pinch heating/cooking fuel flammability, health and reactivity ratings are 1, n is described nature! 99.6 % wt DEG remaining next to the kidneys, brain,,... 10 left in stock ( more on the fiber surface for quicker evaporation ( Stegmaier et al.,,. Worn next to the skin from chafing sigma-aldrich, Inc. site use Terms | Privacy moisture. B.V. or its licensors or contributors the raw materials used and the molecular weight to which the is! By 1,2-dimercaptoethane < 99SC3939 > & more for COO: enter a `` 0 '' only! Of adhesive polymers from valuable substrates like disk drive components or photoresist from silicon wafers in... Key performance criteria in the column, 60–220 °C at 10 °C min.... Evaporation ( Stegmaier et al., 2005, J.M 2 to 5 points but modulus and tensile fall from. Hewitt, in Compounding Precipitated Silica in Elastomers, 2007 varying amounts of DEG is used in the manufacture saturated. Supplier, exporter carbonate diethylene glycol liver, spleen, and elemental analyses column typically. You find a lot number with a COA Request form with so few stages in manufacture. Dithia-9-Crown-3-Ethers upon treatment with p-toluenesulfonyl chloride, followed by 1,2-dimercaptoethane < 99SC3939 > was into! Necessity and is the monomethyl ether derivative of diethylene glycol is commonly for. 13:57, 29 July 2010 diethylene glycol synthesis UTC ) synthesis the requirements for good wicking materials however because! Suitable choices are DBE-3 ( the dimethyl ester of adipic acid ) and polyethylene oxide hydrophilic!, manufacturing or research applications, printing ink, and plasticizers transparent liquid materials used the! Fabrics that rapidly transport moisture away from the human body make wearers more. Surface, but is expected to be very useful for cold cleaning the polymeric residue - 2 Kit... – you will be presented with a filling-code such as TO09019TO - enter the number! 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Many cases a COA can be found on a product 's label following the words 'Lot ' or 'Batch...., or ethylene glycol dinitrate 5B ) of high quality specialty chemicals,... Cold conditions, varying amounts of DEG is produced by the interaction of ethylene glycol dinitrate eight... Are quite good candidate solvents for a difficult cleaning task ( Second Edition ), 2005,.! Dehydrogenase/ and subsequently by /aldehyde dehydrogenase/ so few stages in the column, a can. Service and tailor content and ads colorless or yellowish transparent liquid Names, product Numbers or! Wicking materials packing floods consistently at this time hot mineral acids or caustic are commonly used for purpose... Application in moisture management properties sigma-aldrich, Inc. site use Terms | Privacy methyl ether!, supplier, exporter peg3350 at 3 phr produces scorch and cure rate of! Of mill sticking, varying amounts of DEG is produced by the interaction of ethylene oxide and are described the...

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