oleic acid melting point
The ‘Substance identity’ section is calculated from substance identification information from all ECHA databases. Oleic acid, ethoxylated. In chemical analysis, fatty acids are separated by gas chromatography of their methyl ester derivatives. Oleic acid is a solid with a low melting point; two crystalline forms (α-form, melting point 13.4 °C [56 °F], and β-form, melting point 16.3 °C [61 °F]) are known. In effect, stearic acid is dehydrogenated to give the monounsaturated derivative, oleic acid. Oleic acid is used as a component in many foods, in the form of its triglycerides. anteiso fatty acids and esters. [16] A reaction that converts oleic acid to elaidic acid is called elaidinization. +4 °C WGK 1 CAS No. Its molarity, calculated from its density and molecular weight (0.89 g/mL at 25 degrees C and 282.46 g/mol, respectively) is approximately 3.15 mol/L. cis-9-Octadecenoic acid. [17], In ethenolysis, methyl oleate, the methyl ester of the acid, converts to 1-decene and methyl 9-decenoate:[18]. [12] It is abundantly present in many animal fats, constituting 37 to 56% of chicken and turkey fat,[13] and 44 to 47% of lard. Pack. It has the formula CH3(CH2)7CH=CH(CH2)7COOH. Reference substance for GC. In addition to providing a health claim, the heat stability and shelf life may also be improved, but only if the increase in monounsaturated oleic acid levels correspond to a substantial reduction in polyunsaturated fatty acid (especially α-Linolenic acid) content. Oleic acid is an octadec-9-enoic acid in which the double bond at C-9 has Z (cis) stereochemistry. Guidechem provides Oleic acid chemical database query, including CAS registy number 112-80-1, Oleic acid MSDS (Material Safety Data Sheet), nature, English name, manufacturer, function/use, molecular weight, density, boiling point, melting point, structural formula, etc. 2004-09-16. Our editors will review what you’ve submitted and determine whether to revise the article. Summary: This gene encodes an enzyme involved in fatty acid biosynthesis, primarily the synthesis of oleic acid. These isomers have distinct physical properties and biochemical properties. For example, the monounsaturated fatty acid oleic acid and its geometric isomer elaidic acid have different melting points (.The molecular configuration of triglycerides can also affect the properties of fats. 204-007-1. Molecules of the oleic acid do not pack as tightly because they are "not straight". Updates? Oleic acid. This low-linolenic-acid/high-oleic-acid sunflower oil alternative has proved stable in terms of both storage and flavour.…. Elaidic acid is a 9-octadecenoic acid and the trans-isomer of oleic acid. In chemical terms, oleic acid is classified as a monounsaturated omega-9 fatty acid, abbreviated with a lipid number of 18:1 cis-9. Victims of severe burns often fall prey to infections from normally harmless bacteria, illustrating the…, Thus oleic or linoleic acid (or their acid radicals in glycerides), which are normally liquid at room temperature, can be converted to stearic acid or the acid radical by the addition of hydrogen.…, …but also increases production of oleic acid, a compound that prevents oxidation of vegetable oils. The ‘Substance identity’ section is calculated from substance identification information from all ECHA databases. It is soluble in aqueous base to give soaps called oleates. On contrary, the shape of the hydrocarbon chain in the oleic acid has a kink in the middle. Presence of a ratio balancing the two types is considered essential for good health and that relationship remains subject to scientific debate as research continues. Dates: Modify . Find chemicals information Oleic acid at guidechem, professional and easy to use. In oils such as olive, palm, peanut, and sunflower, it is the principal acid obtained by saponification. Create . Oleic acid is a fatty acid that occurs naturally in various animal and vegetable fats and oils. Instead fatty acids such as oleic acid occur as their esters, commonly triglycerides, which are the greasy materials in many natural oils. The name derives from the Latin word oleum, which means oil. Substance identity Substance identity. Regulatory process names 2 IUPAC names 8 Trade names 1 Other names 2 Other identifiers 25 . Another naturally occurring isomer of oleic acid is petroselinic acid. High oleic variants of plant sources such as sunflower (~80%) and canola oil (70%) also have been developed. It is an odorless, colorless oil, although commercial samples may be yellowish. Print infocard. Omissions? By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. [29] When the saturated fat or trans fat in a fried food is replaced with a stable high oleic oil, consumers may be able to avoid certain health risks associated with consuming saturated fat and trans fat. The trans-double bond isomer of oleic acid, known as elaidic acid, has a linear shape and a melting point of 45 ºC (32 ºC higher than its cis isomer). [11] Karuka contains 52.39% oleic acid. Ozonolysis of oleic acid is an important route to azelaic acid. Free oleic acid renders olive oil inedible. [10] It also comprises 22.18% of the fats from the fruit of the durian species, Durio graveolens. The melting properties of triglycerides are related to those of their fatty acids. Oxidation at the double bond occurs slowly in air, and is known as rancidification in foodstuffs and as drying in coatings. trans-Oleic acid. Empirical formula C 18 H 34 O 2 Molar mass (M) 282,47 g/mol Density (D) 0,89 g/cm³ Boiling point (bp) 360 °C Flash point (flp) >180 °C Melting point (mp) 17 °C Storage temp. Elaidic acid, the most abundant trans fatty acid in diet, appears to have an adverse effect on health. The salts and esters of oleic acid are called oleates. Alternatively, separation of unsaturated isomers is possible by argentation thin-layer chromatography. You may examine models of these compounds by clicking on the desired model picture. Hydrogenation of the double bond yields the saturated derivative stearic acid. Oleic acid, ethoxylated. Oleic acid is a fatty acid that occurs naturally in various animal and vegetable fats and oils. It is a long-chain carboxylic acid; its molecule contains one double bond between C9 and C10 with the cis configuration. It is a long-chain carboxylic acid; its molecule contains one double bond between C 9 and C 10 with the cis configuration. Oleic acid is the most common monounsaturated fatty acid in nature. The coproduct is nonanoic acid:[15]. Oleic acid physical properties including melting point, boiling point, density, viscosity, refractive index, and specific heat You describe Product O1008, Oleic acid, as a liquid in your Specification Sheet, but you do not give its concentration. Oleic acid shows the standard reactions of a carboxylic acid and a disubstituted ethylene, including the formation of a dibromide with bromine and a glycol with dilute aqueous potassium permanganate. It has the formula CH3(CH2)7CH=CH(CH2)7COOH. [2] The name derives from the Latin word oleum, which means oil. Related products. Specifically in sheep, intravenous administration of oleic acid causes acute lung injury with corresponding pulmonary edema. Oleic acid as its sodium salt is a major component of soap as an emulsifying agent. For example, the monounsaturated fatty acid oleic acid and its geometric isomer elaidic acid have different melting points (.The molecular configuration of triglycerides can also affect the properties of fats. It is an odorless, colorless oil, although commercial samples may be yellowish. It is also used as an emollient. Oleic acid is a common monounsaturated fat in human diet. 9-octadecenoic acid. [22], Oleic acid is widely used in the solution phase synthesis of nanoparticles, functioning as a kinetic knob to control the size and morphology of nanoparticles.[23]. It is a conjugate acid of an elaidate and an Octadec-9-enoic acid anion. It is a component of the normal human diet, being a part of animal fats and vegetable oils.
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