Ammonium carbonate alcohol

Lead Carbonate. Lead carbonate [598-63-0] PbCO, mol wt 267.22, d = 6.6g/cm, forms colorless orthorhombic crystals it decomposes at about 315°C. It is nearly insoluble in cold water (0.00011 g/100 mL at 20°C), but is transformed in hot water to the basic carbonate, 2PbC03 Pb(OH)2. Lead carbonate is soluble in acids and alkalies, but insoluble in alcohol and ammonia. It is prepared by passing CO2 iuto a cold dilute solution of lead acetate, or by shaking a suspension of a lead salt less soluble than the carbonate with ammonium carbonate at a low temperature to avoid formation of basic lead carbonate. 

Ammonium cyanide may be prepared in solution by passing hydrogen cyanide into aqueous ammonia at low temperatures. It may also be prepared from barium cyanide and ammonium sulfate, or calcium cyanide with ammonium carbonate. It may be prepared in the dry state by gentiy heating a mixture of potassium cyanide or ferrocyanide and ammonium chloride, and condensing the vapor in a cooled receiver. Ammonium cyanide is soluble in water or alcohol. The vapor above soHd NH CN contains free NH and HCN, a very toxic mixture. 

Benzenesulphonamide.—Finely powdered ammonium carbonate (10 g.) and benzenesulphonyl chloride (about 1 c.c.) are ground in a porcelain basin which is then warmed over a small flame until the odour of the sulphochloride has disappeared the mixture is well stirred meanwhile. After cooling, water is added and the product is collected at the pump, washed several times with water, and then crystallised from alcohol by adding hot water until a turbidity appears. Melting point 156°. 

Valine has been prepared by the action of alcoholic ammonia on a-chloroisovaleric acid 1 by the action of aqueous ammonia on a-bromoisovaleric acid 2 by the action of ammonia and ammonium carbonate on a-bromoisovaleric acid 3 by heating iso-propyl-malonylazidic acid and subsequent hydrolysis 4 by the action of ammonia and hydrogen cyanide on isobutyraldehyde followed by hydrolysis.5 a-Bromoisovaleric acid has been prepared in several ways as described in an earlier volume.6... 

Yellow cubic crystals or powder refractive index 2.253 darkens on exposure to light Mohs hardness 2.5 density 6.47g/cm3 melts at 432°C vaporizes at 1,502°C insoluble in water, alcohol, and most acids slightly soluble in dilute ammonia and ammonium carbonate solutions sparingly soluble in concentrated ammonia solution (0.33 g/lOOmL 10% ammonia solution at 12°C) ... 

White granular powder or cubic crystals refractive index 2.071 darkens on exposure to hght density 5.56 g/cm Moh s hardness 2.5 melts at 455°C vaporizes at 1,547°C vapor pressure 1 and 5 torr at 912 and 1,019°C insoluble in water, alcohol and dilute acids soluble in ammonia solution and concentrated sulfuric acid, alkali cyanide, ammonium carbonate also soluble in potassium bromide and sodium thiosulfate solutions. 

If one brings into the flame of the spectroscope a drop of mother liquor from the Durkheim mineial water, one recognizes only the characteristic rays of sodium, potassium, lithium, calcium, and strontium If then, after having precipitated by known methods the lime, strontia, and magnesia, one takes up the residue with alcohol previously treated with nitric acid to fix the bases, one obtains, after having removed the hthia by means of ammonium carbonate, a mother liquor which in the spectroscope gives the lines of sodium, potassium, and lithium, and, m addition, two remarkable blue lines, very close together, one of which coincides almost exactly with the line Sr S. 

Nitric acid, Sulfuric acid, Phloroglucinol, Hydrochloric acid Sodium chlorate. Copper sulfate. Ammonium hydroxide. Alcohol Sodium chlorate. Copper sulfate. Ammonium hydroxide. Alcohol Sulfuric acid. Potassium nitrate, 1,3,5-Trifluorobenzene, Methylene chloride. Hexane, Charcoal, Sodium sulfate, 2-Amino-2-methylpropanone, Potassium hydrogen carbonate, 1,2-Dichloroethane, Trifluoroacetic acid. Urea, Dimethylformamide Nitric acid. Urine... 

Nitric acid, Urea, Sulfuric acid, Nitronium tetrafluoroborate. Anhydrous ammonia. Acetonitrile, Ethyl acetate. Chloroform Acetonitrile, Ammonium carbonate. Isopropyl alcohol, Nitronium tetrafluoroborate. Anhydrous ammonia. Diethyl ether. Acetone, Butanol, Ethyl acetate... 

Nitronium tetrafluoroborate. Acetonitrile, Ammonium carbonate. Potassium carbonate. Diethyl ether, Acetone, Ethyl acetate. Butanol Sulfamic acid, Potassium hydroxide. Ethanol, Nitric acid, Sulfuric acid, Acetone, Isopropyl alcohol Dioxane, Potassium nitrite. Potassium bicarbonate, Tetranitromethane Lead acetate, Sodium azide Sodium azide, Lead acetate. Water... 

It may be prepared by mixing a solution of eobaltous nitrate with a mixture of ammonium carbonate and ammonia solution and allowing the liquid to stand for some time. Dark red crystals separate and are collected and recrystallised from hot water. In order to obtain the salt in a pure state it is transformed into the iodide by treating with hydr-iodie acid, the iodide precipitated from solution with alcohol, crystallised from water, and transformed into the nitrate by the addition of a concentrated solution of silver nitrate to an aqueous solution. The silver iodide is filtered oft and the nitrate separated from the filtrate by the addition of alcohol. The salt does not give the normal reactions for a carbonate and is unstable towards acids.2... 

Monolayers are best formed from water-insoluble molecules. This is expressed well by the title of Gaines s classic book Insoluble Monolayers at Liquid-Gas Interfaces [104]. Carboxylic acids (7-13 in Table 1, for example), sulfates, quaternary ammonium salts, alcohols, amides, and nitriles with carbon chains of 12 or longer meet this requirement well. Similarly, well-behaved monolayers have been formed from naturally occurring phospholipids (14-17 in Table 1, for example), as well as from their synthetic analogs (18,19 in Table 1, for example). More recently, polymerizable surfactants (1-4, 20, 21 in Table 1, for example) [55, 68, 72, 121], preformed polymers [68, 70, 72,122-127], liquid crystalline polymers [128], buckyballs [129, 130], gramicidin [131], and even silica beads [132] have been demonstrated to undergo monolayer formation on aqueous solutions. 

Oils Edible Safflower Potassium Binoxalate Ammonium Chloride Salicylic Acid Ammonium Chloride Lead Acetate Potassium Binoxalate Sodium Silicofluoride Ammonium Carbonate Fluocilicic Acid P-Dichlorobenzene Ammonium Phosphate Sec-Butyl Acetate Sec-Butyl Alcohol Calcium Phosphate Selenium Trioxide Selenium Dioxide Selenium Dioxide Selenium Dioxide Selenium Trioxide Antimony Trioxide Calcium Hypochlorite Carbaryl Cyclohexanone Charcoal... 

W. P. Bloxam does not recommend the preparation of this salt by passing hydrogen sulphide into an alcoholic soln. of ammonia because a complex salt, (NH S.wNHiS, is obtained, and the crystals contain alcohol. R. Laming made an aq. soln. of ammonium hydrosulphide by heating ammonium carbonate or gas liquor with sodium sulphide P. Spence, by heating the tank waste from the Leblanc soda process or gas lime with ammonium salts in a stream of steam and J. J. Berzelius recommended subliming a mixture of ammonium chloride and potassium sulphide—not in excess. 

The reactions involved in the preparation of ammonium carbamate are essentially either the union of carbon dioxide and ammonia, or the dehydration of ammonium carbonate. A. Basaroff prepared ammonium carbamate by passing the mixture of dried ammonia and carbon dioxide gases into well-cooled absolute alcohol. A copious crystalline precipitate is formed. This is separated by filtration from the mass of liquid, and heated with absolute alcohol in a hermetically sealed vessel to 100°-110° when the liquid on cooling deposits the salt in laminae. These are pressed between filter paper, and dried over potassium hydroxide. A. Mente says the process furnishes a highly pure product, but the cost is high. When the crystals are powdered, they attract moisture from the air, and if the mass is then dried over sulphuric acid or potassium hydroxide, the composition of the product is not quite the same as before. 

J. Davy found ammonium carbamate to be soluble in alcohol of sp. gr. 0 829 and A. Basaroff found that it dissolves when heated with absolute alcohol in a sealed tube, and it crystallizes out again when the soln. cools. E. Divers also found that ammonium carbamate dissolves freely in aqua ammonia, and the system is cooled 100 parts of aqua ammonia dissolve 50 parts of the salt, and the soln. on standing furnishes crystals of normal ammonium carbonate but if the freshly prepared soln. be cooled to 0°, crystals of the carbamate are obtained, consequently ammonia retards the hydrolysis of the carbamate. 

C( NH)-NH2, mw 58.08, N 48.23%- This high nitrogen compd is known only in the form of salts, such as nitrate, Ca H Nj-HNOj, ndls, mp 189°, obtained by electrolysis of ammoniacal-alcoholic soln of ammonium carbonate(Ref 2) and the picrate, CjH N,-C HjNjO orange prisms, mp 252°(Ref 3)... 

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