Natriumtetraphenylborat

Bezeichnung:Natriumtetraphenylborat

CAS-Nr143-66-8

Englisch Name:Sodium tetraphenylboron

CBNumberCB5393075

SummenformelC24H20BNa

Molgewicht342.22

MOL-Datei143-66-8.mol

Synonyma

Natriumtetraphenylborat

Natriumtetraphenylborat physikalisch-chemischer Eigenschaften

Schmelzpunkt	300 °C
storage temp.	2-8°C
Löslichkeit	relatively well soluble in water. A 0.1 M aqueous solution is generally used as reagent.
Aggregatzustand	Solid
Farbe	White
PH	8 (50g/l, H2O, 20℃)
Wasserlöslichkeit	SOLUBLE
Sensitive	Light Sensitive
Merck	14,8690
BRN	3599783
Stabilität	Stable. Incompatible with strong acids, strong oxidizing agents. Light sensitive.
CAS Datenbank	143-66-8(CAS DataBase Reference)
EPA chemische Informationen	Borate(1-), tetraphenyl-, sodium (143-66-8)

Sicherheit

Kennzeichnung gefährlicher	Xn,Xi
R-Sätze:	22-36/37/38
S-Sätze:	26-36/37-36-24/25
RIDADR	UN 2811 6.1/PG 3
WGK Germany	3
RTECS-Nr.	ED3362500
F	8
TSCA	Yes
HazardClass	6.1
PackingGroup	III
HS Code	29310095
Toxizität	LD50 orally in Rabbit: 288 mg/kg

Gefahreninformationscode (GHS)

Sodium tetraphenylboron Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
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.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
white powder
Verwenden
Determination of potassium, ammonium, rubidium, and cesium.
Verwenden
Sodium Tetraphenylboroate is a salt that is commonly used in inorganic and organometallic chemistry as a precipitating agent. Sodium Tetraphenylboroate is also utilized for the preparation of N-acylam monium salts and in coordination chemistry due to their favourable solubility in nonpolar sovlents and their crystallinity.
Verwenden
As reagent for determination of potassium, ammonium, rubidium and cesium ions: Barnard, Buechl, Chemist-Analyst 48, 44, 49 (1959); Montequi, Serrano, An. R. Acad. Farm. 26, 107 (1960).
Allgemeine Beschreibung
Sodium tetraphenylborate (Ph₄BNa) undergoes rhodium-catalyzed addition reactions with N-phenylsulfonyl aldimines to afford R(Ph)CHNHSO₂Ph.
läuterung methode
Dissolve the borate in dry MeOH and add dry Et2O. Collect the solid and dry it in a vacuum at 80o/2mm for 4hours. It can also be extracted (Soxhlet) using CHCl3, and it crystallises from CHCl3 as snow-white needles. It is freely soluble in H2O, Me2CO but insoluble in pet ether and Et2O. An aqueous solution has pH 5 and can be stored for days at 25 or lower, and for 5 days at 45o without deterioration. Its solubility in polar solvents increases with decrease in temperature [Wittig & Raff Justus Liebigs Ann Chem 573 204 1950]. The salt can also be recrystallised from acetone/hexane or CHCl3, or from Et2O/cyclohexane (3:2) by warming the solution to precipitate the compound. Dry it in a vacuum at 80o. It dissolves in Me2CO at 50-60o to give a clear solution. After standing at this temperature for 10minutes the mixture is filtered rapidly through a pre-heated Büchner funnel, cooled and the crystals are collected and dried in a vacuum desiccator at room temperature for 3days [Abraham et al. J Chem Soc, Faraday Trans 1 80 489 1984]. If the product gives a turbid aqueous solution, the turbidity can be removed by treating with freshly prepared alumina gel and filtering. [Beilstein 16 IV 1624.]

Sodium tetraphenylboron Upstream-Materialien And Downstream Produkte

Natriumtetraphenylborat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

143-66-8, Sodium tetraphenylboron Verwandte Suche:

Send Inquriy