Hypochlorous acid, calcium salt

A 3-1., three-necked flask fitted with a mechanical stirrer, a dropping funnel, and a thermometer is then charged with an aqueous solution of 2.2 moles of calcium hypochlorite [Hypochlorous acid, calcium salt] (Note 3), and the piperidine acetate prepared above is placed in the dropping funnel. The hypochlorite solution is stirred and cooled to 0° to — 5° with a methanol-ice bath, and the piperidine acetate is added dropwise over a period of 1.25 hours while the temperature is maintained below 0°. After a further 15 minutes of stirring, equal portions of the mixture are placed in two 2-1. separatory funnels and extracted three times with a total of about 1300 ml. of ether. The ether extract is placed in a 2-1. flask and dried over anhydrous sodium sulfate in a cold room at 4° overnight. After filtration to remove inorganic material, the bulk of the ether is removed by boiling on a water bath maintained below 60° (Note 4). 

Hexanol [111-27-31,42 Hydrazine, monohydrate [7803-57-81,96 Hydrogen peroxide [7722-84-1], 25 Hypochlorous acid, calcium salt [7778-54-3], 118... 

HYPOCFILORITE SOLUTIONS with >5% but <16% available chlorine by wt. (DOT see SHU500 HYPOCHLORITE SOLUTIONS with 16% or more available chlorine by wt. (UN 1791) see SHU500 HYPOCHLOROUS ACID see HOVOOO HYPOCHLOROUS ACID, CALCIUM SALT see HOV500 HYPOCHLOROUS ACID, POTASSIUM SALT see PLKOOO... 

Synonyms Bleaching powder Calcium chlorohydrochlorite Calcium hypochloride Calcium oxychloride Chlorinated lime Hypochlorous acid, calcium salt Lime chloride Lime, chlorinated Classification Salt of hypochlorous acid Definition Commercial grade usu. 50% or more Ca(OCI)2... 

Hypochlorous acid, calcium salt. See Calcium hypochlorite... 

Formula based on the assumption that bleaching powder is a chlorohypo-chlorite.—W. Odling25 suggested that when chlorine is allowed to act upon a bivalent base—say, calcium hydroxide, Ca(OH)2—a molecule of each of the two monobasic acids—hydrochloric and hypochlorous acids—formed by the action of chlorine on water, is neutralized by one molecule of the base, and what seems to be a mixed salt is formed ... 

If an excess of alkali be present, the soln. can be dried in vacuo at ordinary temp, without much decomposition. An excess of chlorine acting on hypochlorites at ordinary temp, liberates the acid KOCl-f Cl2-f H20==KC1+2H0C1. Similarly with bleaching powder. The liberated acid can be removed by distillation, but a rise of temp, is then attended by the formation of chloric acid. J. L. Gay Lussac (1842) dissolved two mol. of chlorine monoxide in a soln. containing a mol. of K20, and found that on evaporation in vacuo, the eq. of one mol. of chlorine monoxide was removed from the liquid this indicates that the alkali hypochlorites contain the eq. of a mol. each of chlorine monoxide, C120, andpotassium monoxide, K20. A. W. Williamson stated that hypochlorous acid does not expel carbon dioxide from the carbonates except by its own decomposition. W. Wolters, however, stated that carbon dioxide is expelled from sodium carbonate, and G. Lunge and H. Schappi drove carbon dioxide from calcium carbonate by distilling hypochlorous acid with an excess of this salt. 

CHLORINE OXYGEN ACIDS AND SALTS - DICHLORINE MONOXIDE, HYPOCHLOROUS ACID, AND HYPOCHLORITES] (Vol 5) Calcium chlonde hydroxide hypochlonte dihydrate [64175-94-6]... 

Nitrogen trichloride was fitst prepared by Dulong1 in 1811 by the action of chlorine gas upon a solution of an ammonium salt. It may also be obtained by the action of hypochlorous acid upon an ammonium salt.2 Hentschel3 prepared it in benzene solution by extracting the aqueous reaction mixture of calcium hypochlorite and ammonium chloride with benzene. 

Hazards Calcium hypochlorite is a powerful oxidizer, and should never be mixed with concentrated sulfuric acid explosions will result. Do not mix hypochlorous acid with ammonia or ammonium salts—as the high explosive nitrogen triiodide is formed. 

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