Bicarbonates, alkali

In 1888, Turpin prepd a series of cool expls which were permissable, by incorporating materials such as alkali chlorides, Na or K bicarbonate (up to 50% content), fluorides, acetates, oxalates, Ba carbonate. 10H2O, chromates, hyposulfites, stannic acid, boric acid, borates, etc, in the expls listed above eg, a) K chiorate 45, double salt of Ca and K acetochlorate 35, tar 18, charcoal 5, and alkali bicarbonate or oxalate I5ps b) K chlorate 15, double salt of K and Amm chlorobichromate 35 K or Na nitrate 10, tar 18, charcoal 5, and K or Na bicarbonate 15ps... 

A mixture of water/pyridine appears to be the solvent of choice to aid carbenium ion formation [246]. In the Hofer-Moest reaction the formation of alcohols is optimized by adding alkali bicarbonates, sulfates [39] or perchlorates. In methanol solution the presence of a small amount of sodium perchlorate shifts the decarboxylation totally to the carbenium ion pathway [31]. The structure of the carboxylate can also support non-Kolbe electrolysis. By comparing the products of the electrolysis of different carboxylates with the ionization potentials of the corresponding radicals one can draw the conclusion that alkyl radicals with gas phase ionization potentials smaller than 8 e V should be oxidized to carbenium ions [8 c] in the course of Kolbe electrolysis. This gives some indication in which cases preferential carbenium ion formation or radical dimerization is to be expected. Thus a-alkyl, cycloalkyl [, ... 

NaN, is used as an initiator for emulsion polymerization (Ref 137), as a cellulating agent (Ref 134) and as a retarder (Ref 185) in the manuf of sponge rubber. The addn of NaN, an alkali bicarbonate and an alkali to form a compn of pH 9-12 prevents or reduces plating out or coagulation of styrene and butadiene latexes stored in contact with metals (Ref 162). NaN, is used also to decomp nitrites in the presence of nitrates (Ref 172). The rate of nitrite decompn is increased with an increase in azide concn. Acosta (Ref 172) detd the optimum ratio to be CNaN,/CNaNO, 3-9- Compds of the structure R,R (- 0) (- NH) have been prepd from the corresponding sulfoxide and NaN, + H,S04 in chlf soln (Ref 171) ... 

Saccharin is soluble at 20°, in 290 parts of water, in 30 parts of alcohol, in 12 parts of acetone, in 50 parts of glycerol, in about 25 parts of boiling water. It is very slightly soluble in ether and chloroform soluble in dilute ammonia solution, and in solutions of alkali bicarbonates with evolution of carbon dioxide (9). Its aqueous solution is acid to litmus (2). On alkaline and acid hydrolysis saccharin gives rise to 0-sulphamoyl-benzoic acid and ammonium 0-sulphobenzoic acid respectively (2). 

Soluble 1 in 290 of water, 1 in 30 of ethanol, and 1 in 12 of acetone slightly soluble in chloroform and ether readily soluble in dilute ammonia solution and in solutions of alkali hydroxides and, with the evolution of carbon dioxide, in solutions of alkali bicarbonates and carbonates. 

If the soln. of sodium chloride to be electrolyzed is acidified with hydrochloric acid, the acid is first electrolyzed, and this continues until the soln. is nearly neutral, but the trace of hydrochloric acid which escapes electrolysis liberates hypochlorous acid, which then decomposes and increases the yield of chlorate. If acid be added to the soln. before the hypochlorous acid has attained its maximum concentration, all the hypochlorous acid in soln. is oxidized to chlorate, and if the addition of acid be similarly continued, 90 per cent, of the theoretical yield of chlorate can be obtained. Similar results can be obtained by keeping the soln. slightly acid by the addition of potassium acid fl uoride, KHF2, or alkali bicarbonate. 

Fordos and Gelis s Method. The method suggested by Fordos and Gelis depends on the reaction between hydrocyanic acid and iodine in presence of alkali bicarbonate, which has been mentioned already ... 

The alkalized aluminas are prepared by impregnation with solutions of alkali salts, for example, alkali bicarbonates. The salts are typically decomposed by heat-treatment to 500 °C. The alkali oxide contents are typically 5% (wt), but a range of 1-10% has been reported. The surface areas are reduced... 

Novak, A., P. Saumagne, and L. D. C. Bok, 1963. An infrared spectroscopic study of some alkali bicarbonates NaHC03, NH4HCO3 and Na sesquicarbonateNa2C03 NaHC03. /. Chim. Phys. 60 1385. 

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