I agree Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our website without changing the browser settings you grant us permission to store that information on your device.
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.
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.  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).
Hazard Statements: H300-H311-H315-H319-H370
Fatal if swallowed. Toxic in contact with skin. Causes skin irritation. Causes serious eye irritation. Causes damage to organs.
Precautionary Statements: P260-P264b-P270-P280-P301+P310-P302+P352-P305+P351+P338-P307+P311-P312-P330-P332+P313-P337+P313-P361-P363-P501c
Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN: Wash with plenty of soap and water. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF exposed: Call a POISON CENTER or doctor/physician. Call a POISON CENTER or doctor/physician if you feel unwell. Rinse mouth. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Remove/Take off immediately all contaminated clothing. Wash contaminated clothing before reuse. Dispose of contents/ container to an approved waste disposal plant