4-Ethylphenol

4-Ethylphenol Struktur
123-07-9
CAS-Nr.
123-07-9
Bezeichnung:
4-Ethylphenol
Englisch Name:
4-Ethylphenol
Synonyma:
PEP;Phenol,4-ethyl-;P-ETHYLPHENOL;2PO;4-EthyL;para-ethylphenol;4-hydroxyphenylethane;1-Hydroxy-4-ethylbenzene;GC>=97%;FEMA 3156
CBNumber:
CB2106353
Summenformel:
C8H10O
Molgewicht:
122.16
MOL-Datei:
123-07-9.mol

4-Ethylphenol Eigenschaften

Schmelzpunkt:
40-42 °C(lit.)
Siedepunkt:
218-219 °C(lit.)
Dichte
1,011 g/cm3
Dampfdichte
4.2 (vs air)
Dampfdruck
0.13 mm Hg ( 20 °C)
Brechungsindex
1.5330
FEMA 
3156 | P-ETHYLPHENOL
Flammpunkt:
213 °F
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
Löslichkeit
4.9g/l
Aggregatzustand
Crystalline Mass or Crystals
pka
pK1:10.0 (25°C)
Wichte
1.0123 (20℃)
Farbe
White to brownish
Geruch (Odor)
at 1.00 % in dipropylene glycol. phenolic castoreum smoke guaiacol
Geruchsart
smoky
Wasserlöslichkeit
4.9 g/L (25 ºC)
JECFA Number
694
BRN 
1363317
Stabilität:
Stable. Incompatible with acid chlorides, acid anhydrides, oxidizing agents.
InChIKey
HXDOZKJGKXYMEW-UHFFFAOYSA-N
LogP
2.1 at 20℃ and pH7
Oberflächenspannung
54mN/m at 998g/L and 22℃
CAS Datenbank
123-07-9(CAS DataBase Reference)
NIST chemische Informationen
Phenol, 4-ethyl-(123-07-9)
EPA chemische Informationen
p-Ethylphenol (123-07-9)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher Xi,C
R-Sätze: 36/37/38-R36/37/38-34
S-Sätze: 26-36-S36-S26-45-36/37/39
RIDADR  UN 2430 8/PG 3
WGK Germany  3
RTECS-Nr. SL4040000
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  29071900
Giftige Stoffe Daten 123-07-9(Hazardous Substances Data)
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H318 Verursacht schwere Augenschäden. Schwere Augenschädigung Kategorie 1 Achtung P280, P305+P351+P338, P310
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.

4-Ethylphenol Chemische Eigenschaften,Einsatz,Produktion Methoden

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.

Beschreibung

4-Ethylphenol (4-EP) is a phenolic compound with the formula C8H10O. It is colorless or white needles with a powerful woody-phenolic and yet somewhat sweet odor and tends to be yellow on exposure to light. It is slightly solouble in water, solouble in alcohol, ether and benzene and carbon disulfide. It is found in arabica coffee and can be produced in wine and beer by the spoilage yeast Brettanomyces. It is the starting material for the production of 4-vinylphenol and of various antioxidants and can also be used as an intermediate for pharmaceuticals and dyes. It is an industrially versatile commodity chemical widely applied in the pharmaceutical and food industries.

Chemische Eigenschaften

4-Ethylphenol, also known as p-Ethylphenol, is a colorless or white crystalline compound. It can turn yellow when exposed to light. It has a powerful woody-phenolic, medicinal, yet somewhat sweet odor. Its melting point is 4143℃, boiling point is 218219°C, and flash point is 100°C. It has a relative density of 1.011 and a refractive index of 1.5239. It is slightly soluble in water and soluble in ethanol, ether, acetone, benzene, and carbon disulfide. It is a natural component found in foods such as egg fruit, European sour cranberry, pork, rum, whisky, and coffee.

Occurrence

Reported found in yellow passion fruit, smoked fish, lean fish, beer, cognac, rum, whiskey, cider, sherry, grape wines and coffee

Verwenden

4-Ethylphenol is suitable for use in the determination of 4-ethylguaiacol and 4-ethylphenol in the aroma of red wines using headspace-solid-phase microextraction method. It is a chemical reagent used in the synthesis of 5-HT1A receptor agonists endowed with antinociceptive activity in vivo. It is also used in the preparation of isopropylamides as potent and noncovalent proteosome inhibitors.

synthetische

By catalytic reaction between phenol and ethylene or ethanol; by heating 8-chloro-3-ethylbenzene with NaOH in the presence of copper powder.

Vorbereitung Methode

4-Ethylphenol is produced industrially by sulfonation of ethylbenzene under mild (kinetically controlled) conditions and subsequent alkali fusion of the 4-ethylbenzenesulfonic acid obtained. The purity of the commercial product is 98%.

Allgemeine Beschreibung

4-Ethylphenol is a volatile phenol. It has been synthesized from p-coumaric acid by employing a synthetic medium containing Dekkera bruxellensis ISA 1791. It has been identified as an aroma compound in red wine.

Hazard

Toxic material.

Sicherheitsprofil

Poison by intravenous route. When heated to decomposition it emits acrid smoke and irritating vapors.

Toxikologie

4-Ethylphenol is a potentially toxic compound, capable of producing respiratory distress, cardiovascular collapse, shock, ventricular tachycardia, and coma in an adult. Liver, lung, central nervous system and renal injury may also occur. In case of exposure to eyes, irrigate exposed eyes with copious amounts of room temperature water for at least 15 minutes. Monitor for respiratory distress in case of inhalation exposure. Systemic manifestations of toxicity may include nausea, vomiting, diarrhea, dyspnea, tachypnea, pallor, and profuse sweating.

läuterung methode

Non-acidic impurities are removed by passing steam through a boiling solution containing 1 mole of the phenol and 1.75 moles of NaOH (as an aqueous 10% solution). The residue is cooled and acidified with 30% (v/v) H2SO4, and the free phenol is extracted into diethyl ether. The extract is washed with water, dried with CaSO4 and the ether is evaporated. The phenol is distilled at 100mm pressure through a Stedman gauze-packed column (p 11). It is further purified by fractional crystallisation by partial freezing, and by zone refining, under N2 [Biddiscombe et al. J Chem Soc 5764 1963]. Alternatively purify it via the benzoate, as for phenol. The 4-nitrophenylbenzoate has m 80o (from EtOH). [Beilstein 6 H 470, 6 III 1663, 5 IV 3020.]

Einzelnachweise

[1] https://en.wikipedia.org/wiki/4-Ethylphenol
[2] http://www.hmdb.ca/metabolites/HMDB29306
[3] https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/f?./temp/~x8ypqu:1:cpp
[4] https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/f?./temp/~x8ypqu:1:manf
[5] YING ZHANG Shaojun D Liangkun Long. Heterologous synthesis of 4-ethylphenol in engineered Escherichia coli[J]. Process Biochemistry, 2020, 96: Pages 157-164. DOI:10.1016/j.procbio.2020.06.003.
[6] WOHLFARTH C. Dielectric constant of 4-ethylphenol[C]. 1900: 0. DOI:10.1007/978-3-540-75506-7\_257.
[7] K H JONES  D J H P W Trudgill. 4-Ethylphenol metabolism by Aspergillus fumigatus.[J]. Applied and Environmental Microbiology, 1994, 60 6: 1978-1983. DOI:10.1128/aem.60.6.1978-1983.1994.

4-Ethylphenol Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


4-Ethylphenol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 396)Lieferanten
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NANJING PASTEUR ChEMICAL CO.,LTD
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Hebei Mojin Biotechnology Co., Ltd
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career henan chemical co
+86-0371-86658258
sales@coreychem.com China 29914 58

123-07-9(4-Ethylphenol)Verwandte Suche:


  • (4-Hydroxyphenyl)ethane
  • (p-Hydroxyphenyl)ethane
  • 1-Ethyl-4-hydroxybenzene
  • 4-ethyl-pheno
  • LABOTEST-BB LT00436976
  • FEMA 3156
  • ETHYLPHENOLS
  • p-Ethyl Phenol 4-Ethyl Phenol
  • 4-ETHYLPHENOL PESTANAL
  • P-ETHYLPHENOL 98+%
  • 4-Ethylphenol,2PoC8H10O
  • p-hydroethylbenzene,4-ethylphenol
  • P-ETHYLPHENOL,FOODGRADE
  • 4-Ethylphenol, 98+%
  • 4-Ethylphenol,97%
  • 4-Ethylphenol >=97.0% (GC)
  • 4-Ethylphenole
  • Paraethylphenol
  • p-ethyl-pheno
  • Phenol, p-ethyl-
  • Phenol,p-ethyl-
  • p-Hydroxyethylbenzene
  • p-ETHYLPHENOL, PRACT
  • 4-Ethylphenol, 97% 5GR
  • 4-ETHYLPHENOL
  • sodium 4-ethylphenolate
  • GC>=97%
  • 4-Ethylphenol>
  • 4-Ethylphenol,>99%
  • Metacresol EP Impurity K
  • Metacresol Impurity 11 (Metacresol EP Impurity K)
  • 4-Ethylphenol USP/EP/BP
  • 4-Ethylphenol 123-07-9
  • PEP
  • P-ETHYLPHENOL
  • 1-Hydroxy-4-ethylbenzene
  • Phenol,4-ethyl-
  • 4-EthyL
  • 4-hydroxyphenylethane
  • 2PO
  • para-ethylphenol
  • Natural 4-ethyl phenol
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  • 0123-07-09
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