Myristinsure

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H315：Verursacht Hautreizungen.

  H319：Verursacht schwere Augenreizung.

  H335：Kann die Atemwege reizen.

• Sicherheit

  P261：Einatmen von Staub vermeiden.

  P304+P340：BEI EINATMEN: Die Person an die frische Luft bringen und für ungehinderte Atmung sorgen.

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

  P405：Unter Verschluss aufbewahren.

Myristic acid Chemische Eigenschaften,Einsatz,Produktion Methoden

• R-Sätze Betriebsanweisung:

  R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

• S-Sätze Betriebsanweisung:

  S24/25:Berührung mit den Augen und der Haut vermeiden.

• Beschreibung

  Myristic acid, also called tetradecanoic acid , is a common saturated fatty acid with the molecular formula CH₃(CH₂)₁₂COOH. A myristate is a salt or ester of myristic acid.
  Myristic acid is named after the nutmeg Myristica fragrans. Nutmeg butter is 75 % trimyristin, the triglyceride of myristic acid. Besides nutmeg, myristic acid is also found in palm kernel oil, coconut oil, butter fat and is a minor component of many other animal fats. It is also found in spermaceti, the crystallized fraction of oil from the sperm whale.
  Myristic acid is also commonly added co-translationally to the penultimate, nitrogen-terminus, glycine in receptor-associated kinases to confer the membrane localisation of the enzyme. The myristic acid has a sufficiently high hydrophobicity to become incorporated into the fatty acyl core of the phospholipid bilayer of the plasma membrane of the eukaryotic cell. In this way, myristic acid acts as a lipid anchor in biomembranes.
  The ester isopropyl myristate is used in cosmetic and topical medicinal preparations where good absorption through the skin is desired.
  Reduction of myristic acid yields myristyl aldehyde and myristyl alcohol.

• Chemische Eigenschaften

  Myristic acid occurs as an oily white crystalline solid with a faint, waxy, oily odor.

• Occurrence

  Reported found in nutmeg, palm seed, sperm whale oil, blue cheese, burley tobacco, cooked beef and chicken, fish, rum, apricot, banana, lemon and grapefruit juice, cranberry, guava, grapes, melon, papaya, raspberry, strawberry fruit and jam, cucumber, tomato, many cheeses, thyme, breads, butter, milk, lamb liver, pork, hop oil, beer, cognac, whiskies, peanut oil, cocoa, tea, coconut meat and milk, cloudberry, beans, passion fruit, mushroom, mango, starfruit, tamarind, kelp, cardamom, rice, buckwheat, watercress, malt, wort, loquat, Bourbon vanilla, lemon balm, shrimp, nectarine, crab, scallop, squid, cape gooseberry, Chinese quince, pawpaw and sweet grass oil.

• Verwenden

  Myristic Acid is a saturated fatty acid obtained from nutmeg，coconut oil and other fats. it has poor water solubility but is soluble in alcohol, chloro- form, and ether. it is used as a lubricant, binder, and defoaming agent.

• Verwenden

  Myristic acid is a 14-carbon saturated (14:0) fatty acid. In vivo, it is commonly added covalently to the N-terminus of proteins in a co-translational process termed N-myristoylation. In addition, there are examples where N-myristoylation occurs post-translationally, when a hidden myristoylation pattern is exposed.

• Vorbereitung Methode

  Myristic acid occurs naturally in nutmeg butter and in most animal and vegetables fats. Synthetically, it may be prepared by electrolysis of methyl hydrogen adipate and decanoic acid or by Maurer oxidation of myristyl alcohol.

• Definition

  ChEBI: Tetradecanoic acid is a straight-chain, fourteen-carbon, long-chain saturated fatty acid mostly found in milk fat. It has a role as a human metabolite, an EC 3.1.1.1 (carboxylesterase) inhibitor, a Daphnia magna metabolite and an algal metabolite. It is a long-chain fatty acid and a straight-chain saturated fatty acid. It is a conjugate acid of a tetradecanoate.

• synthetische

  Prepared from the fatty acid mixture of palm seed oil.

• Aroma threshold values

  Detection: 10 ppm

• Allgemeine Beschreibung

  Oily white crystalline solid.

• Air & Water Reaktionen

  Insoluble in water.

• Reaktivität anzeigen

  Myristic 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 with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble 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 Myristic 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.

• Brandgefahr

  Myristic acid is probably combustible.

• Pharmazeutische Anwendungen

  Myristic acid is used in oral and topical pharmaceutical formulations. Myristic acid has been evaluated as a penetration enhancer in melatonin transdermal patches in rats and bupropion formulations on human cadaver skin.Further studies have assessed the suitability of myristic acid in oxymorphone formulations and clobetasol 17-propionate topical applications.Furthermore, polyvinyl alcohol substituted with myristic acid (as well as other fatty acids) at different substitution degrees has been used for the preparation of biodegradable microspheres containing progesterone or indomethacin.

• Biochem/physiol Actions

  Myristic acid is commonly added via a covalent linkage to the N-terminal glycine of many eukaryotic and viral proteins, a process called myristoylation. Myristoylation enables proteins to bind to cell membranes and facilitates protein-protein interactions. Myristolyation of proteins affect many cellular functions and thus has implications in health and disease .

• Sicherheitsprofil

  Poison by intravenous route. Mutation data reported. An eye and human skin irritant. When heated to decomposition it emits acrid smoke and irritating fumes.

• Sicherheit(Safety)

  Myristic acid is used in oral and topical pharmaceutical formulations and is generally regarded as nontoxic and nonirritant at the levels employed as an excipient. However, myristic acid is reported to be an eye and skin irritant at high levels and is poisonous by intravenous administration. Mutation data have also been reported.
  LD₅₀ (mouse, IV): 0.043 g/kg
  LD₅₀ (rat, oral): >10 g/kg

• Lager

  The bulk material should be stored in a well-closed container in a cool, dry, place.

• läuterung methode

  Purify the acid via the methyl ester (b 153-154o/10mm, n25 1.4350), as for capric acid. [Trachtman & Miller J Am Chem Soc 84 4828 1962.] Also purify it by zone melting. It crystallises from pet ether, and is dried in a vacuum desiccator containing shredded wax. [Beilstein 2 IV 1126.]

• Inkompatibilitäten

  Myristic acid is incompatible with strong oxidizing agents and bases.

• Regulatory Status

  GRAS listed. Included in the FDA Inactive Ingredients Database (oral capsules). Included in nonparenteral medicines licensed in the UK.

Myristic acid Upstream-Materialien And Downstream Produkte

Myristinsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global(780)Suppliers

544-63-8, Myristic acid Verwandte Suche: