Tetrylammoniumbromid

Bezeichnung:Tetrylammoniumbromid

CAS-Nr71-91-0

Englisch Name:Tetraethylammonium bromide

CBNumberCB2214159

SummenformelC8H20BrN

Molgewicht210.16

MOL-Datei71-91-0.mol

Synonyma

Tetrylammoniumbromid

Tetrylammoniumbromid physikalisch-chemischer Eigenschaften

Schmelzpunkt	285 °C (dec.)(lit.)
Dichte	1,397 g/cm³
Dampfdichte	5.3 (vs air)
Brechungsindex	1,442-1,444
storage temp.	Store below +30°C.
Löslichkeit	acetonitrile: 0.1 g/mL warm, clear, colorless
Aggregatzustand	Liquid
Farbe	White to cream
PH	6.5 (100g/l, H2O, 20℃)
Geruch (Odor)	Odorless
Säure-Base-Indikators(pH-Indikatoren)	6.5 at 100 g/l
Wasserlöslichkeit	2795 g/L (25 º C)
Sensitive	Hygroscopic
Merck	14,9199
BRN	3563430
Stabilität	Stable. Incompatible with strong oxidizing agents.
InChIKey	HWCKGOZZJDHMNC-UHFFFAOYSA-M
CAS Datenbank	71-91-0(CAS DataBase Reference)
NIST chemische Informationen	Tetraethylammonium bromide(71-91-0)
EPA chemische Informationen	Ethanaminium, N,N,N-triethyl-, bromide (71-91-0)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36-37/39
WGK Germany	3
RTECS-Nr.	BS5950000
F	3
TSCA	Yes
HS Code	29239000

Gefahreninformationscode (GHS)

Tetraethylammonium bromide 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.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
white to light yellow crystalline solid
Verwenden
- Tetraethylammonium bromide (TEAB) catalyzes the synthesis of thioesters by the oxidative coupling of aldehydes or alcohols with thiols or disulfides.
- It is used as a catalyst, along with o-iodoxybenzoic acid (IBX), in the oxidation of sulfides to sulfoxides and primary carboxamides to one-carbon dehomologated nitriles.
- TEAB can also be used as an organic template to synthesize zeolite beta.
Verwenden
Tetraethylammonium Bromide, can be used as a source of tetraethylammonium ions for various pharmaceutical studies. It has also the ability to block K+ channels in various tissues.
Allgemeine Beschreibung
The use of ion-pairing reagents as mobile phase additives allows the separation of ionic and highly polar substances on reversed phase HPLC columns. The purity of mobile phase additives is of utmost importance to their successful application. Sigma-Aldrich offers an outstanding range of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) determination. All mobile phase additives are subject to rigorous testing with special emphasis on the requirements of modern reversed phase HPLC:
läuterung methode
Recrystallise the bromide from EtOH, CHCl3 or diethyl ether, or recrystallise it from acetonitrile and dry it over P2O5 under reduced pressure for several days. It also recrystallises from EtOH/diethyl ether (1:2), EtOAc, water or boiling MeOH/acetone (1:3) or by adding an equal volume of acetone and allowing to cool. Dry it at 100o in vacuo for 12 days, and store over P2O5. [Beilstein 4 IV 332.]

Tetraethylammonium bromide Upstream-Materialien And Downstream Produkte

Tetrylammoniumbromid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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