4-Ethylbenzoesaeure

Bezeichnung:4-Ethylbenzoesaeure

CAS-Nr619-64-7

Englisch Name:4-Ethylbenzoic acid

CBNumberCB3153435

SummenformelC9H10O2

Molgewicht150.17

MOL-Datei619-64-7.mol

Synonyma

4-Ethylbenzoesaeure

4-Ethylbenzoesaeure physikalisch-chemischer Eigenschaften

Schmelzpunkt	112-113 °C(lit.)
Siedepunkt	271.51°C (estimate)
Dichte	1.0937 (estimate)
Brechungsindex	1.5188 (estimate)
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	Chloroform (Sparingly), Methanol (Slightly)
Aggregatzustand	Powder
pka	pK1:4.35 (25°C)
Farbe	White to beige
BRN	2041840
InChIKey	ZQVKTHRQIXSMGY-UHFFFAOYSA-N
CAS Datenbank	619-64-7(CAS DataBase Reference)
NIST chemische Informationen	4-Ethylbenzoic acid(619-64-7)
EPA chemische Informationen	Benzoic acid, 4-ethyl- (619-64-7)

Sicherheit

Kennzeichnung gefährlicher	Xn,Xi
R-Sätze:	22-36/37
S-Sätze:	22-24/25-37/39-26
WGK Germany	3
Hazard Note	Irritant
HS Code	29163900

Gefahreninformationscode (GHS)

4-Ethylbenzoic acid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R36/37:Reizt die Augen und die Atmungsorgane.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
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.
Chemische Eigenschaften
It is a white to beige powder with a melting point of 112-113℃. It is not soluble in water, but can be dissolved in benzene and toluene.
Verwenden
4-Ethylbenzoic acid was used in the synthesis of ethyl 4-vinyl-α-cyano-β-phenylcinnamate. It was also used to functionalize the edge of “pristine” graphite in the presence of polyphosphoric acid/phosphorus pentoxide.
Definition
ChEBI: 4-Ethylbenzoic acid is a member of benzoic acids.
Application
4-Ethylbenzoic acid has various applications such as being used as an intermediate in the production of pesticide insecticides, including tebufenozide and methoxyfenozide, as well as an initiator of carbon nanotube materials. Additionally, it can also use as an intermediate in the production of liquid crystals.
synthetische
The preparation of 4-ethylbenzoic acid can be done in the following steps:
1. Add ethylbenzene and trichloroacetaldehyde in the reaction kettle.
2. Add anhydrous aluminum trichloride in batches at 0 °C.
3. Stir and react at -10 ~ 0 °C for 2 hours after the addition.
4. Add dilute hydrochloric acid to the mixed solution to decompose the remaining aluminum trichloride.
5. Wash with NaHCO3 and water.
6. Distill the organic layer to recover ethylbenzene.
7. Distill to obtain p-ethylbenzene-2,2,2-trichloroethanol.
8. Dissolve the trichloroethanol in methanol.
9. Add NaOH solution and stir.
10. Add dropwise 30% hydrogen peroxide aqueous solution to the mixture.
11. Stir until the trichloroethanol disappears.
12. Acidify with HCl to obtain crystalline 4-ethylbenzoic acid.
Allgemeine Beschreibung
4-Ethylbenzoic acid reacts with lanthanum nitrate in aqueous solution to yield the polymer catena-poly[[aqua(4-ethylbenzoic acid-κO)lanthanum(III)]-tri-μ-4-ethylbenzoato].

4-Ethylbenzoic acid Upstream-Materialien And Downstream Produkte

4-Ethylbenzoesaeure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

619-64-7, 4-Ethylbenzoic acid Verwandte Suche:

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