2 edition of Fat acid esters of ethylene glycol. found in the catalog.
Fat acid esters of ethylene glycol.
Robert Fulford Ruttan
Written in English
|Statement||By R. F. Ruttan and J. R. Roebuck...|
|Series||McGill university. Papers from the Dept. of chemistry. new ser.,, no. 2|
|Contributions||Roebuck, John Ransom.|
|LC Classifications||QD1 .M19 no. 2|
|The Physical Object|
|Number of Pages||11|
|LC Control Number||18010985|
ethylene or propylene glycol fatty acid esters ethoxylated derivatives of monoglycerides. Quantitative analysis of emulsifiers is difficult as most of them are similar in structure, their commercial sources are quite heterogeneous and their extraction from starchy foods is very difficult. Stearic acid is mainly used in the production of detergents, soaps, and cosmetics such as shampoos and shaving cream products. Soaps are not made directly from stearic acid, but indirectly by saponification of triglycerides consisting of stearic acid esters. Esters of stearic acid with ethylene glycol, glycol stearate, and glycol distearate are used to produce a pearly effect in shampoos, soaps, and other cosmetic Boiling point: °C ( °F; K), decomposes, °C ( °F; K), at 15 mmHg.
The anti-freeze used today is essentially pure ethylene glycol with a little dye added to make leaks easier to spot. Ordinary anti-freeze will be our source of ethylene glycol. We also need a di-acid; from the last quarter of the nineteenth century, one had been produced by the coal-tar industry for the manufacture of dyes and pharmaceuticals. The presence of acids or glycol esters in the glycol used to produce engine coolant is undesirable. Under conditions in an engine cooling system, the esters can hydrolyze to form glycol and an acid. The acid will react with the corrosion inhibitors, thereby reducing the useful life of the coolant.
The reaction kinetics and the chemical equilibrium of the consecutive, reversible liquid-phase esterification of ethylene glycol with acetic acid to ethylene glycol monoacetate and ethylene glycol diacetate using the acidic ion-exchange resin Amberlyst 36 as catalyst were investigated. Kinetic experiments were accomplished for various temperatures and starting compositions of the reactants Cited by: Polyoxyethylene fatty acid/oleic acid Poly(ethylene Glycol) Monooleates Polyethylene Glycol Monooleates Polyoxyethylene Oleates PEG Monooleate Polyethylene Glycol Monolaurates Molecular Weight: Molecular Formula: C28H54O7. Properties and Uses: Acid Ethoxylates is light yellow grease. 2.
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Fatty acid ethylene glycol esters, C 16 – C 36 Analysis of montan wax Application Note Energy & Fuels Introduction The Agilent CP-SimDist UltiMetal column allows high temperature analysis (HT-GC) of the boiling components of refined/modified and raw montan wax, Montan wax is a plant wax derived from lignite by solvent extraction.
Propylene glycol fatty acid esters are lipophilic, oil‐soluble emulsifiers with specific crystalline properties. Industrial production of propylene glycol fatty acid esters can take place via the esterification of propylene glycol with fatty acids, typically in the form of commercial stearic acid blends.
The use of propylene glycol esters of fatty acids in foods, as with all other food emulsifiers, Cited by: 3.
DEFINITION Propylene glycol esters of fatty acids are mixtures of propylene glycol mono- and diesters of saturated and unsaturated fatty acids derived from edible oils and fats. The products are produced either by direct esterification of propylene glycol with fatty acids or by transesterification of propylene glycol with oils or Size: KB.
Fatty acids, C (even numbered), diesters with ethylene glycol Molecular and structural information Molecular formula: C34H66O4 - C38H74O4 Molecular weight: >= - = SMILES notation: CCCCCCCCCCCCCCCC(=O)OCCOC(=O)CCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCC(=O)OCCOC(=O)CCCCCCCCCCCCCCC.
Nonionic surfactant Polyethylene glycol ether Polyethylene glycol fatty acid ester Polyethylene glycol derivative Penetration enhancer Percutaneous absorption This is a preview of subscription content, log in to check by: 2.
Acetic acid, hydroxy- 2-ethoxyethyl ester Glycolic acid, 2-ethoxyethyl ester Ethane, 1,2-diethoxy- DEE; Diethyl cellosolve; Ethylene glycol diethyl ether. Fatty acids, tall-oil, esters with ethylene glycol. The ‘Substance identity’ section is calculated from substance identification information from all ECHA databases.
The substance identifiers displayed in the InfoCard are the best available substance name, EC number, CAS number and/or the molecular and structural formulas.
Some substance identifiers may have been claimed Fat acid esters of ethylene glycol. book, or may not have. PROPYLENE GLYCOL ESTERS OF FATTY ACIDS Explanation These substances have been evaluated for acceptable daily intake by the Joint FAO/WHO Expert Committee on Food Additives (see Annex 1, Ref.
13) in Since the previous evaluation, additional data have become available and are summarized and discussed in the following monograph.
In Glycols and Glycol and Polyglycol Ethers and Esters. Analytical Chemistry30 (1), DOI: /acaCited by: If ethylene glycol was to be reacted with boric acid it could form [1,3,2]dioxaborolanol which is a cyclic ester formed by reacting both alcohol groups in the glycol with the boric acid.
It is important to note that the esters of inorganic acids tend to have very different molecular strucutres to the esters of carboxylic acids. Fatty acid esters of ethylene and propylene glycol, and polyglycerol, are commonly used in foods and cosmetics, primarily as emulsifiers (Hayes, ).
They are prepared via a similar procedure as described earlier for MAG and sorbitan by: 4. The Toxicology of Glycol Ethers and its Relevance to Man ECETOC TR No. 95 Measurement methods 56 Health effects 59 Haematological effects 60 Behavioural and neurological effects 62 Reproductive effects 63 Other effects, including poisoning 67 Occupational exposure limit values 72File Size: KB.
Propylene glycol mono- and diesters of fats and fatty acids may be safely used in food, subject to the following prescribed conditions: (a) They are produced from edible fats and/or fatty acids in compliance with and/or oleic acid derived from tall oil fatty acids in compliance with EPA has not classified the glycol ethers for carcinogenicity.
Physical Properties The glycol ethers are colorless liquids with a slight odor. (1) The chemical formula for 2-methoxyethanol is C 3 H 8 O 2, and the molecular weight is g/mol. (4) The vapor pressure for 2-methoxyethanol is mm Hg at 25 °C, and it has a log octanol/water.
Fatty acid esters (FAEs) are a type of ester that result from the combination of a fatty acid with an the alcohol component is glycerol, the fatty acid esters produced can be monoglycerides, diglycerides, or triglycerides. Dietary fats are chemically triglycerides. Glycerol esters of fatty acids occur as colorless to brown powders, flakes, coarse powders, or granular or waxy.
acid methyl ester (EPA, C ω3) and all cis 4,7,10,13,16,docosahexenoic acid methyl ester (DHA, C ω3) are separated from other FAMEs.
This analysis is very important in the framework of recent interest in omega-3 fatty acid determina-tion. On the cyanopropyl column, separation of the cis- and trans-isomers is also possible. Due to. PROPYLENE GLYCOL 87 6. ANALYTICAL METHODS formation of methyl ester.
Humans serum (glycolic acid) Extraction from salted, acidified serum using methyl ethyl ketone followed by Quantifying ethylene glycol or propylene glycol in wines requires no preparation of Size: KB.
Propylene glycol esters of fatty acids: Emulsifier, stabiliser. Combination of propanediol and natural fats. Normal fat consists of glycerol and fatty acids, for these products glycerol is replaced by propanediol.
The fats are mainly from plant origin, but also fats of animal origin may be used. Oxidative Cleavage of Vicinal Diols with Periodic Acid: Mechanism. In this reaction, an intermediate cyclic ester is formed between periodic acid and the glycol derivative and water is eliminated concurrently.
Presumably, the ester dissociates via an aromatic 6-electroncenter transition state into two carbonyl fragments and iodic acid. Iodine is reduced from +VII to +V. So if the label states vegetable oil and has a high saturated fat content it is likely it will be palm oil or coconut but as coconut oil is more expensive than palm oil it is more likely to be palm oil.
Ethylene glycol esters. Ethylene glycol monoesters. Ethylene glycol monostearate. Palm Methyl Esters. Palm oil. Palm olein. Palm stearine. Ethylene glycol is the main ingredient in many antifreeze mixtures for automobile radiators. The two OH groups lead to extensive intermolecular hydrogen bonding.
This results in a high boiling point—°C; thus ethylene glycol does not boil away when it is used .Literature References: Nonionic surfactants prepared commercially by esterification of fatty acids with ethylene oxide or with polyethylene glycol.
Of the general structure RCOO(CH 2 CH 2 O) n H or RCOO(CH 2 CH 2 O) n OCR where R is a long chain alkyl group or mixture of alkyl groups. Wide range of properties achieved by changing the hydrophobic fatty acid segment and/or varying the degree of.Four ethylene glycol di-fatty acid esters (A) and four ethylene glycol mono-fatty acid esters (B), prepared from ethylene glycol and butyric, caprylic, lauric and palmitic acid, were pyrolyzed at °C in nitrogen atmosphere.
The products of pyrolysis of the former (A) were fatty acids and fatty acid vinyl esters and a small amount of lower Cited by: 1.