Laurinsure

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Achtung

• Gefahrenhinweise

  H318：Verursacht schwere Augenschäden.

• Sicherheit

  P280：Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.

  P305+P351+P338：BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.

Lauric acid Chemische Eigenschaften,Einsatz,Produktion Methoden

• R-Sätze Betriebsanweisung:

  R36/38:Reizt die Augen und die Haut.

• S-Sätze Betriebsanweisung:

  S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

• Beschreibung

  Lauric acid, also known as dodecanoic acid, is a saturated fatty acid with a 12-carbon atom chain, thus falling into the medium chain fatty acids, is a white crystalline carboxylic acid with a faint odor of bay oil or soap. It has been found at high levels in coconut oil. Lauric acid induces the activation of NF-κB and the expression of COX-2, inducible nitric oxide synthase (iNOS), and IL-1α in RAW 264.7 cells when used at a concentration of 25 μM.

• Physikalische Eigenschaften

  Lauric acid occurs as a white crystalline powder with a slight odor of bay oil or a fatty odor. It is a common constituent of most diets; large doses may produce gastrointestinal upset.

• Chemische Eigenschaften

  Like many other fatty acids, lauric acid is inexpensive, has a long shelf-life, and is non-toxic and safe to handle. It is mainly used for the production of soaps and cosmetics. For these purposes, lauric acid is neutralized with sodium hydroxide to give sodium laurate, which is a soap. Most commonly, sodium laurate is obtained by saponification of various oils, such as coconut oil. These precursors give mixtures of sodium laurate and other soaps.

• Occurrence

  Lauric acid, as a component of triglycerides, comprises about half of the fatty acid content in coconut oil, laurel oil, and in palm kernel oil (not to be confused with palm oil) , Otherwise it is relatively uncommon. It is also found in human breast milk ( 6.2 % of total fat), cow's milk (2.9%), and goat's milk (3.1 %).

• Verwenden

  Lauric Acid is a fatty acid obtained from coconut oil and other veg- etable fats. it is practically insoluble in water but is soluble in alco- hol, chloroform, and ether. it functions as a lubricant, binder, and defoaming agent.

• Verwenden

  Intermediates of Liquid Crystals

• Verwenden

  Given its foaming properties, the derivatives of lauric acid (h-dodecanoic acid) are widely used as a base in the manufacture of soaps, detergents, and lauryl alcohol. Lauric acid is a common constituent of vegetable fats, especially coconut oil and laurel oil. It may have a synergistic effect in a formula to help fight against mircoorganisms. It is a mild irritant but not a sensitizer, and some sources cite it as comedogenic.

• Definition

  ChEBI: Lauric acid is a straight-chain, twelve-carbon medium-chain saturated fatty acid with strong bactericidal properties; the main fatty acid in coconut oil and palm kernel oil. It has a role as a plant metabolite, an antibacterial agent and an algal metabolite. It is a straight-chain saturated fatty acid and a medium-chain fatty acid. It is a conjugate acid of a dodecanoate. It derives from a hydride of a dodecane.

• Definition

  A white crystalline carboxylic acid, used as a plasticizer and for making detergents and soaps. Its glycerides occur naturally in coconut and palm oils.

• Vorbereitung Methode

  Lauric acid is a fatty carboxylic acid isolated from vegetable and animal fats or oils. For example, coconut oil and palm kernel oil both contain high proportions of lauric acid. Isolation from natural fats and oils involves hydrolysis, separation of the fatty acids, hydrogenation to convert unsaturated fatty acids to saturated acids, and finally distillation of the specific fatty acid of interest.

• Aroma threshold values

  Aroma characteristics at 1.0%: fatty, creamy, cheeselike, candle waxy with egglike richness

• Taste threshold values

  Taste characteristics at 5 ppm: waxy,fatty and oily, tallowlike, creamy and dairylike with a coating mouthfeel

• Synthesis Reference(s)

  Tetrahedron Letters, 32, p. 5931, 1991 DOI: 10.1016/S0040-4039(00)79429-9

• Allgemeine Beschreibung

  White solid with a slight odor of bay oil.

• Air & Water Reaktionen

  Insoluble in water.

• Reaktivität anzeigen

  Lauric acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in Lauric acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions. Lauric acid can react with oxidizing materials.

• Health Hazard

  May be harmful by inhalation, ingestion or skin absorption. Vapor or mist is irritating to eyes, mucous membrane and upper respiratory tract. Causes eye and skin irritation.

• Brandgefahr

  Behavior in Fire: May cause dust explosion.

• Pharmazeutische Anwendungen

  pharmaceutical applications it has also been examined for use as an enhancer for topical penetration and transdermal absorption, rectal absorption, buccal delivery,(14) and intestinal absorption. It is also useful for stabilizing oil-in-water emulsions. Lauric acid has also been evaluated for use in aerosol formulations.

• Biochem/physiol Actions

  Substrate for CYP 4A11

• Sicherheit(Safety)

  Lauric acid is widely used in cosmetic preparations, in the manufacture of food-grade additives, and in pharmaceutical formulations. General exposure to lauric acid occurs through the consumption of food and through dermal contact with cosmetics, soaps, and detergent products. Lauric acid is toxic when administered intravenously.
  Occupational exposure may cause local irritation of eyes, nose, throat, and respiratory tract, although lauric acid is considered safe and nonirritating for use in cosmetics. No toxicological effects were observed when lauric acid was administered to rats at 35% of the diet for 2 years. Acute exposure tests in rabbits indicate mild irritation. After subcutaneous injection into mice, lauric acid was shown to be noncarcinogenic.
  LD50 (mouse, IV): 0.13 g/kg
  LD50 (rat, oral): 12 g/kg

• Synthese

  Produced from synthetic lauryl alcohol

• in vitro

  previous study showed that lauric acid could induce apoptosis in both caco-2 and iec-6 cells when compared to butyrate. moreover, lauric acid reduced gsh availability and generated ros in caco-2 cells. mechanistic study indicated that lauric acid reduced caco-2 and iec-6 cells in g0/g1and arrested cells in the s and g2/m phases. in addition, it was found that butyrate protected iec-6 cells from ros-induced damage, while lauric acid induced higher levels of ros when compared with butyrate [1].

• in vivo

  mouse in vivo study found that both epicutaneous application and intradermal injection of lauric acid could decrease the number of p. acnes colonized in mouse ears effectively, thus relieving p. acnes-induced granulomatous inflammation and ear swelling [2].

• Carcinogenicity

  Lauric acid was not carcinogenic in the BALB/c:CFW mouse after repeated subcutaneous injections. Lauric acid applied twice weekly for 20 weeks did not promote tumors in mice initiated with 9,10- dimethyl-1,2-benzanthracene. After more extended application (daily, 6 days/week, for 31 weeks), lauric acid caused an increase in skin papillomas, but no histologically malignant tumors were found. Lauric acid was not carcinogenic in rats after exposure in the diet to 35% lauric acid for 2 years.

• Lager

  Lauric acid is stable at normal temperatures and should be stored in a cool, dry place. Avoid sources of ignition and contact with incompatible materials.

• läuterung methode

  Distil the acid in a vacuum. Also crystallise it from absolute EtOH, or from acetone at -25o. Alternatively, purify it via its methyl ester (b 140.0o/15mm), as described for capric acid. It has also been purified by zone melting. [cf Beilstein 1 III 2913.]

• Inkompatibilitäten

  Lauric acid is incompatible with strong bases, reducing agents, and oxidizing agents.

• Regulatory Status

  GRAS listed. Lauric acid is listed as a food additive in the EAFUS list compiled by the FDA. Reported in the EPA TSCA Inventory.

• Einzelnachweise

  [1] fauser jk,matthews gm,cummins ag,howarth gs. induction of apoptosis by the medium-chain length fatty acid lauric acid in colon cancer cells due to induction of oxidative stress. chemotherapy.2013;59(3):214-24.
  [2] nakatsuji t,kao mc,fang jy,zouboulis cc,zhang l,gallo rl,huang cm. antimicrobial property of lauric acid against propionibacterium acnes: its therapeutic potential for inflammatory acne vulgaris. j invest dermatol.2009 oct;129(10):2480-8.
  [3] kate l. feltrin et al. acute oral administration of lauric acid reduces energy intake in healthy males. e-spen journal. 2014 april; 9 (2): e69–e75

Lauric acid Upstream-Materialien And Downstream Produkte

Laurinsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global(844)Suppliers

143-07-7, Lauric acid Verwandte Suche: