Cyanogen hydrate

Cyanic acid—Cyanogen hydrate——13—does not exist in... 

The methyl ester (100, R = CH3), derived from this A-nor acid by treatment with diazomethane, is different from the ester (102) obtained either by Favorskii rearrangement of 2a-bromo-5a-cholestan-3-one (101) or by the action of cyanogen azide on 3-methoxy-5a-cholest-2-ene (103) followed by hydrolysis on alumina. The ketene intermediate involved in photolysis of (99) is expected to be hydrated from the less hindered a-side of the molecule to give the 2j -carboxylic acid. The reactions which afford (102) would be expected to afford the 2a-epimer. These configurational assignments are confirmed by deuteriochloroform-benzene solvent shifts in the NMR spectra of esters (100) and (102). ... 

Brom-benzol, n. bromobenzene. calcium, n. calcium bromide, -cyan, n. cyanogen bromide, bromocyanogen. -dampf, tn. bromine vapor, -eisen, n. iron bromide, -fiasche, /. bromine bottle, -fluor, n. bromine fluoride, -gehalt, tn. bromine content, -gold, n. gold bromide, -goldkalium, n. potassium auri-bromide, potassium bromoaurate. bromhaltig, a. contaim ng bromine, Brom-hydrat, n. hydrobromide bromine hydrate. -hydrin, n. bromohydrin. 

Oonversely, the members of the acetic series may be corn verted into those of the succinio containing one atom of carbon more, by replacing one atom of the methylio hydrogen in acetic acid by cyanogen, and then boiling with potasric hydrate —... 

SMeaiMlj/Ue aeid is trihydrio. It is obtsiiied om glycerin by replacing the hydroxyl in the latter by cyanogen, and then acting upon the trii anhydrin, so formed, by potassic hydrate —... 

Sprinkle 1 g of cyanogen bromide-activated Sepharose 4B (Pharmacia-LKB, Piscataway, NJ) over 20 ml of 10 mM HC1. The gel swells immediately. One gram of dry gel yields 3.5 ml of hydrated matrix. 

Acrylamide, barium, benzene, bromodichloromethane, bromoform, carbon tetrachloride, chloral hydrate, chlordane, chloroform, cyanogen chloride, dibromochloromethane, dichloroacetate,... 

II). Inorganic compounds other than metallic oxides, hydrates, oxyacids, and salts (including alkali manufacture and cyanogen compounds)... 

Cyanogen derivatives arc numerous and capable of great complexity. Platinous cyanide Pt(CN)3, is obtained as a yellow precipitate when mercuric cyanide is added to a solution of alkali chlorplatinite. Double cyanides of the general formula M 2Pt(CN)4 are formed by such reactions as 6 KCN + PtCL = K2Pt(CN) + 4 KC1 + (CN),. These platino-cyanides do not respond to the ordinary tests for platinum. These compounds yield beautifully colored hydrates, and the barium and calcium hydrates have optical isomeric modifications.2 Certain of these hydrates become remarkably fluorescent under excitation from ultraviolet light or radium. 

In tlie praeenoe of potasalo hydrate, cyanogen evolves ammonia uad produces potassio oxalate —... 

Potassium tetracyanopalladate(II) when crystallized from water forms the 3-hydrate, which is a white crystalline salt, isomorphous with the corresponding rhombic tetra-cyanoplatinate(II). The 3-hydrate is efflorescent in air it loses two molecules of water of crystallization at 100° and the thii d at 200°. When the compound is heated to moderately high temperatm-es, it decomposes with the formation of palladium, cyanogen, and potassium cyanide. The 1-hydrate is readily soluble in water and in liquid ammonia and is somewhat soluble in alcohol giving colorless solutions in each case. The addition of dilute acids to potassium tetracyanopalladate(II) precipitates pal-ladium(II) cyanide, while boiling with concentrated sulfuric acid completely decomposes the compound. 

Azodicarbonitrile (72) was prepared by pyrolysing cyanogen azide N3.CN, which was formed from cyanogen chloride, hydrazine hydrate and sodium azide [166]. The overall yield of (72) was about 25%. 

Other by-products associated with chlorine/hypochlorite disinfection include trihalomethanes (THM s), haloacetic acids, haloacetonitriles, haloketones, chloral hydrate (trichloroacetaldehyde), chloropicrin (trichloro-nitromethane), cyanogen chloride and chlorate (WHO, 2000). 

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