Phenylessigsure

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H319：Verursacht schwere Augenreizung.

• Sicherheit

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

Phenylacetic acid Chemische Eigenschaften,Einsatz,Produktion Methoden

• ERSCHEINUNGSBILD

  WEISSE BIS GELBE KRISTALLE ODER FLOCKEN MIT STECHENDEM GERUCH.

• CHEMISCHE GEFAHREN

  Zersetzung beim Verbrennen unter Bildung reizender Rauche.

• ARBEITSPLATZGRENZWERTE

  TLV nicht festgelegt (ACGIH 2005).
  MAK nicht festgelegt (DFG 2006).
  

• INHALATIONSGEFAHREN

  Beim Verdampfen bei 20°C tritt eine gesundheitsschädliche Kontamination der Luft nicht oder nur sehr langsam ein

• WIRKUNGEN BEI KURZZEITEXPOSITION

  WIRKUNGEN BEI KURZZEITEXPOSITION:
  Der Stoff ist schwach reizend auf die Haut und reizend auf die Augen.

• LECKAGE

  Persönliche Schutzausrüstung: Atemschutzgerät, A/P2-Filter für organische Dämpfe und schädlichen Staub. NICHT in die Umwelt gelangen lassen. Verschüttetes Material in Behältern sammeln.

• R-Sätze Betriebsanweisung:

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

• S-Sätze Betriebsanweisung:

  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
  S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
  S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.

• Chemische Eigenschaften

  white crystals with a honey-like odour

• Chemische Eigenschaften

  Phenylacetic acid has a sweet, animal, honey-like odor in dilute solution. The odor is persistent and disagreeable in concentrated solution. It has a sweet, honey-like flavor at high levels. At low levels, it is a sweetener.

• Chemische Eigenschaften

  Phenylacetic Acid occurs in Japanese peppermint oil, in neroli oil, and in traces in rose oils. It is a volatile aroma constituent of many foods (e.g., honey). It forms colorless crystals (mp 78°C) that have a honey odor.
  The common route to phenylacetic acid is conversion of benzyl chloride into benzyl cyanide by reaction with sodium cyanide, followed by hydrolysis. Because of its intense odor, phenylacetic acid is added to perfumes in small quantities for rounding off blossom odors. Addition to fruit aromas imparts a sweet honey note.

• Occurrence

  Reported found among the constituents of a few essential oils: tobacco, Rosa centifolia, Bulgarian rose, orange flowers absolute, neroli and Mentha arvensis of Japanese origin; also reported present among the volatile constituents of cocoa. Also reported found in guava, papaya, raspberry, strawberry, cooked potato, tomato, peppermint oil, pepper, rye bread, cheddar cheese, Swiss cheese, Gruyere cheese, boiled mutton, beer, cognac, cider, sherry, grape wines, white wine, sake, cocoa, tea, honey soy protein, passion fruit, starfruit, mango, mushroom, malt, wort, roasted chicory root, naranjilla fruit, choke berry, sea buckthorn and Chinese quince.

• Verwenden

  Phenylacetic Acid is used in the synthesis of Diclofenac (D436450) and its metabolite 4'-Hydroxydiclofenac (H825225), which is the principal human metabolite of Diclofenac.

• Verwenden

  Phenylacetic acid?has strong fixative agent and can be directly used in low-or-middle-level soap, cosmetics essences. It is usually to confect the substitute for civetta with indole quinoline type and used in acacia, sweet-scented osmanthus, rose, hosta and other floral essences.

• Verwenden

  Phenylacetic Acid is a flavoring agent that is crystalline (white, glis- tening), with unpleasant, persisting odor resembling geranium leaf and rose when diluted. it is soluble in most fixed oils and glycerin, slightly soluble in water, and insoluble in mineral oil. it is obtained by chemical synthesis. it is also termed a-toluic acid.

• Definition

  ChEBI: A monocarboxylic acid that is toluene in which one of the hydrogens of the methyl group has been replaced by a carboxy group.

• synthetische

  By the treatment of benzyl cyanide with dilute sulfuric acid and other processes.

• Aroma threshold values

  Detection: 1 ppm

• Taste threshold values

  Taste characteristics at 30 ppm: sweet, floral, chocolate, honey and tobacco.

• Synthesis Reference(s)

  The Journal of Organic Chemistry, 20, p. 440, 1955 DOI: 10.1021/jo01122a005
  Tetrahedron Letters, 26, p. 2027, 1985 DOI: 10.1016/S0040-4039(00)94770-1

• Flammability and Explosibility

  Non flammable

• Sicherheitsprofil

  Moderately toxic by ingestion, subcutaneous, and intraperitoneal routes. An experimental teratogen. Combustible liquid. Used in production of drugs of abuse. When heated to decomposition it emits acrid smoke and irritating fumes

• Stoffwechsel

  Phenylacetic acid is conjugated in man and the chimpanzee, but probably in no other species, with glutamine. In most other animals, except the hen, it behaves like benzoic acid, forming glycine and glucuronic acid conjugates. In the hen, it conjugates with ornithine, forming phenacetornithuric acid. Phenacetylglutamine and its addition compound with urea were isolated from human urine alter the administration of phenylacetic acid (Williams, 1959).

• läuterung methode

  Crystallise the acid from pet ether (b 40-60o), isopropyl alcohol, 50% aqueous EtOH or hot water (m 77.8-78.2o). Dry it in vacuo. It can be distilled under a vacuum. [Beilstein 9 II 294, 9 III 2169.]

Phenylacetic acid Upstream-Materialien And Downstream Produkte

103-82-2, Phenylacetic acid Verwandte Suche: