Thallium -nitrate

Alkyl aryl ketones can be converted to arylacetic acid derivatives in an entirely different manner. The reaction consists of treatment of the substrate with silver nitrate and I2 or Br2, ° or with thallium nitrate, MeOH, and trimethyl orthoformate adsorbed on Montmorillonite K-10 clay, an acidic clay. ... 

The potassium derivatives obtained from the reaction mixture are typically not isolated in pure form, and the crude products are often converted directly to the thallium complexes by metathesis with either thallium nitrate or thallium acetate [Eqs. (1) and (2)]. 

Polarography has also been applied to the determination of potassium in seawater [535]. The sample (1 ml) is heated to 70 °C and treated with 0.1 M sodium tetraphenylborate (1 ml). The precipitated potassium tetraphenylborate is filtered off, washed with 1% acetic acid, and dissolved in 5 ml acetone. This solution is treated with 3 ml 0.1 M thallium nitrate and 1.25 ml 2M sodium hydroxide, and the precipitate of thallium tetraphenylborate is filtered off. The filtrate is made up to 25 ml, and after de-aeration with nitrogen, unconsumed thallium is determined polarographically. There is no interference from 60 mg sodium, 0.2 mg calcium or magnesium, 20 pg barium, or 2.5 pg strontium. Standard eviations at concentrations of 375, 750, and 1125 pg potassium per ml were 26.4, 26.9, and 30.5, respectively. Results agreed with those obtained by flame photometry. 

Thallium(I) acetate, 24 630-632 Thallium compounds, in organic reactions, 24 635 Thallium formate, 24 630 Thallium halides, 24 632 Thallium ion, 24 629 Thallium nitrate, uses for, 24 636 Thallium salts, 24 630, 632 Thallium sulfate, uses for, 24 636 Thallium (III) compounds, in organic reactions, 24 635-636 Thallium(III) fluoride, 24 632 Thallium(III) ion, 24 630 Thallium(III) salts, 24 632 Thallium(III) trifluoroacetate, 24 635 Thallium (Tl), 24 627-641... 

Thallium metal, 24 627—629 Thallium nitrates, 24 633 Thallium organometallics, 24 633—635 Thallium oxides, 24 632—633 Thallium poisonings, 24 637, 638-639 Thallium stress test, 24 629 Thallium sulfates, 24 628, 633 Thaumatin, 72 43, 24 241-242 Thaumatin II, 24 242 Theaspiranes, 24 572 Thebaine, 2 89 Thenardite, 22 863, 5 785t Thenoyltrifluoroacetone molecular formula, 5 712t Theobroma cacao, 6 350 Theobromine, 2 105-106... 

Thallium nitrate is prepared by reacting thallium metal, thaUous oxide, TbO or thaUous hydroxide, TlOH, with nitric acid followed by crystallization ... 

Our first study of these systems was the synthesis in 1998 of the polymeric complex [ 1( 6 5)2( )2] through the reaction between triphenylphosphine oxide, thallium nitrate and lithium bis(pentafluorophenyl)aurate(I) [71]. This complex consisted of an extended unsupported linear chain of alternate gold and thallium centers. These atoms displayed Au-Tl interactions of 3.0358(8) and 3.0862(8) A, and the thallium atoms showed a distorted pseudo-trigonal-bipyramidal environment, taking into account the stereochemically active inert pair of this atom. As described below, the environment around thallium is one of the main factors that affects the optical properties of these mixed systems. 

He knew that thallium compounds had no smell or taste and that the symptoms of poisoning could easily be mistaken for a variety of other ailments. But he wasn t quite as smart as he thought — Trepal neglected to get rid of the evidence. Police found a vial containing remnants of thallium nitrate in his home. George James Trepal now sits on death row while his lawyers attempt to cast doubt on the chemical evidence. And he s not the only thallium murderer to have received the death sentence. In Pennsylvania, Joann Curley awaits the same fate. 

The effect of this silatrane on the acid resistance of erythrocytes has been examined using a model anaemia induced by a heavy metal salts8). For this purpose 2 ml of 0.001% thallium nitrate and 2 ml of 0.1% or 0.01% l-(0,0-diethylphosphone-methyl)-3,7,10-trimethylsilatrane solution were added to the blood of rats. Then the blood was incubated for 1 hour at 37 °C. 

Administration of this silatrane, especially at 0.01% concentration, to the erythrocytes incubated with thallium nitrate increases their resistance to haemolysis. The erythrograms shift to the right and the maximum erythrocytolysis decreases to 25% whereas the resistance time amounts to 600 30 sec (Fig. 6). 

When O-alkylated or O-acylated D-glucals are heated in 9 1 acetonitrile-methanol with thallium nitrate trihydrate, ring contraction occurs to give compounds 117 in about 50% yield following, it may be assumed, addition of the metal ion at C-2 and methoxyl at C-l to lead to intermediates that ring contract to the 2,5-anhydro products.128... 

A white powder is suspected of containing thallium nitrate (molecular weight = 266). The freezing point of a solution (0.75 g powder dissolved in 50 g H2O) was —0.13°C. Assuming complete dissociation, could it be TINO3 ... 

All these reactions are analogous to those previously effected using thallium nitrate in methanol however, they gave better yields and, more importantly, the use of the toxic thallium salt was avoided. 

Murillo-Pulgarin et al. used a phosphorimetry method for the determination of dipyridamole in pharmaceutical preparations [44]. Ten tablets or capsules were powdered and homogenized, and then 0.1 g was dissolved in 0.1 M sodium dodecyl sulfate. The determination of dipyridamole was carried out in 26 mM sodium dodecyl sulfate/ 15.6 mM thallium nitrate/20 mM sodium sulfite, whose pH was adjusted to 11.5 by the addition of sodium hydroxide. After 15 min at 20°C, the phosphorescence was measured at 616 nm (after excitation at 303 nm). The calibration graph was linear from 100-1600 ng/mL, with a detection limit of 16.4 ng/mL. Relative standard deviations were in the range of 0.5-7.3%, and sample recoveries were in the range of 95-97%. 

SAFETY PROFILE Moderately toxic by ingestion, intraperitoneal, subcutaneous, and intravenous routes. Experimental reproductive effects. Human mutation data reported. Can react violently with Bt2, HCIO4, potassium-tert-butoxide, tert-chlorobenzene + NaOH, formic acid + thallium nitrate. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALDEHYDES. 

The thallium salt, Tl3Mo(SCN)8, is formed as an amorphous, light yellow precipitate when thallium nitrate is added to a solution of the potassium salt. 

The admirable researches of van Eyk on the mixtures of potassium nitrate and thallium nitrate have unravelled a still more complicated case for the salts considered are isotetmmorphouB Fig. 91 where thallium nitrate has been taken for substance 1... 

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