Sodium potassium tetramethylammonium

Potassium sodium tetramethylammonium aluminum silicate hydrate,... 

K2Al4NNaO Sii4C4H,2 7H2O, Potassium sodium tetramethylammonium aluminum silicate hydrate, 22 65 K2Bi4N20,2C36H7j, Potassium,... 

For anion analysis, the regenerant must supply a source of hydrogen ions to convert the eluent anions to a less conductive form. The most common regenerant is dilute sulfuric acid, whereas for cation analysis, the most common regenerant is hydroxide (sodium, potassium, or tetramethylammonium hydroxide). 

Alternative esterification procedures include the interaction of alkyl halide with the anion of the acid in the form of a salt (silver, sodium, potassium, calcium, tetramethylammonium). 

The ozonides are characterized by the presence of the ozonide ion, O - They are generally produced by the reaction of the inorganic oxide and ozone (qv). Two reviews of ozonide chemistry are available (1,117). Sodium ozonide [12058-54-7] NaO potassium ozonide [12030-89-6] 35 rubidium ozonide [12060-04-7] RbO and cesium ozonide [12053-67-7] CsO, have all been reported (1). Ammonium ozonide [12161 -20-5] NH O, and tetramethylammonium ozonide [78657-29-1/, (CH ) NO, have been prepared at low temperatures (118). 

The formation of ad-quinonoid transient intermediates by electronic excitation has been identified spectroscopically. Proton abstractors (bases) such as sodium hydroxide, potassium iodide or tetramethylammonium octahydrotriborate induce deflagration in molten TNT. 

Aldehyde Imidazole Potassium fluoride Oxalyl chloride Methyl magnesium bromide Acetic anhydride Sodium hydrogen carbonate Hydrogen hydrochloride Lithium hydroxide Tetrabromomethane Tetramethylammonium acetate Benzylchlorobis(triphenyl-phosphine)palladium (II)... 

Methyl />-tolyl sulfone has been prepared by oxidation of methyl 7>-tolyl sulfide with hydrogen peroxide 4 r or ruthenium tetroxide,6 by alkylation of sodium -toluenesullinate with methyl iodide 7,8 or with methyl potassium sulfate,9 by decarboxylation of -tolylsulfonylacetic acid,7 by thermal decomposition of tetramethylammonium -toluenesulfinate,10 by reaction of cw-bis-(%tolylsulfonvl)-ethene with sodium hydroxide (low yield),11 by the reaction of methanesulfonyl chloride with toluene in the presence of aluminum chloride (mixture of isomers),12 by... 

Conjugated dienes can be reduced to monoolefins by treatment with hydrogen, hydrated cobalt chloride, potassium cyanide, potassium chloride, sodium hydroxide, and tetramethylammonium chloride or benzyltri-ethylammonium chloride as the phase-transfer catalyst. The hydridopen-tacyanocobaltate anion, HCo(CN)s3, is the probable metal catalyst (47-... 

Some applioations require the use of a basic medium for ultrasonio digestion. Most such involve biologioal samples the matrix of which is decomposed by hydrolysis — which is more effeotive in a basio medium than in an acidic medium. One example is the digestion of tissues, where sells are disrupted in a basic medium such as that provided by tetramethylammonium hydroxide, sodium hydroxide, potassium hydroxide or sodium methoxide. 

HYDROXYDE de POTASSIUM (FRENCH) see PLJ500 HYDROXYDE de SODIUM (FRENCH) see SHSOOO HYDROXYDE de TETRAMETHYLAMMONIUM (FRENCH) see TDK500... 

Figure 1. Membrane sodium currents in a squid giant axon before (a) and during (b) internal perfusion with 1 / M (+)-trans allethrin. Sodium current associated with a step depolarization from -100 mV to -20 mV was recorded after cesium and tetramethylammonium had been substituted for internal K+ and external K+, respectively, to eliminate the potassium current. In the control record (a), the peak sodium current (Ip) is followed by a small slow sodium current (Is) during a depolarizing pulse, and the tail current (Itail) associated with step repolarization decays quickly. In the presence of allethrin (b), Ip remains unchanged while Is is greatly increased in amplitude. Itail s als0 increased in amplitude and decays very slowly.

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