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75-57-0 - Tetramethylammonium chloride, 97% - A13288 - Alfa Aesar

A13288 Tetramethylammonium chloride, 97%

CAS-Nummer
75-57-0
Synonyme

Größe Preis ($) Menge Verfügbarkeit
250g 36,67
1000g 93,60
5000g 337,60
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Tetramethylammonium chloride, 97%

MDL
MFCD00011628
EINECS
200-880-8

Chemische Eigenschaften

Formel
C4H12ClN
Molmasse
109.60
Schmelzpunkt
>300°
Dichte
1.17
Sensitivität
Hygroscopic
Löslichkeit
Soluble in water. Insoluble in ether, and benzene.

Anwendungen

Tetramethylammonium binds AT-rich DNA polymers while concomitantly abolishing the preferential melting of AT versus GC base pairs. Supplied as 0.2 ?m filtered solution in 18 megohm water. It is employed as a phase transfer catalyst.

Bemerkungen

Hygroscopic. Store at room temperature. Incompatible with oxidizing agents. Ensure adequate ventilation.

Literaturverweise

J. Kathleen Buckner.; William L. Jorgensen. Energetics and hydration of the constituent ion pairs of tetramethylammonium chloride. J. Am. Chem. Soc. 1989, 111 (7),2507-2516 .

Anthony G. Dilella.; Savio L.C. Woo. [49] Hybridization of genomic DNA to oligonucleotide probes in the presence of tetramethylammonium chloride.Methods Enzymol. 1987, 152 447-451 .

Thermally-stable phase-transfer catalyst (see Appendix 2) which has been used in nucleophilic displacement reactions of aryl nitro groups with KF in tetramethylene sulfone: J. Org. Chem., 56, 6406 (1991). A detailed study of the halex Cl - /F - exchange reaction of activated aryl chlorides, for example the conversion of 1,2-dichloro-4-nitrobenzene to 2-chloro-1-fluoro-4-nitrobenzene in DMSO at 120oC showed tetramethylammonium chloride to be superior to other common phase-transfer catalysts. It was necessary to pre-dry the catalyst to <0.2% water to avoid competition from hydrolytic displacement: Chem. Commun., 297 (1996).

Compare also Tetraphenyl­phosphonium bromide, A15860 and Tetraphenyl­phosphonium chloride, A10575.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H301-H311-H315-H319-H335

Toxic if swallowed. Toxic in contact with skin. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Sicherheitshinweise: P280h-P305+P351+P338-P309-P310

Wear protective gloves/clothing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF exposed or if you feel unwell: Immediately call a POISON CENTER or doctor/physician.

Weitere Referenzen

Beilstein
2496575
Gefahrenklasse
6.1
Verpackungsgruppe
II
Harmonized Tariff Code
2923.90
TSCA
Yes
RTECS
BS7700000

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