Ammonium carbonate CAS

Carbonates Ammonium carbonate, [CAS 506-87-6] (NH4)2C03, volatile, white solid, soluble, formed by reaction of NH4OH and CO2 by crystallization from dilute alcohol, loses NH3, C02. and H20 at ordinary temperatures, rapidly at 58 0 ammonium hydrogen carbonate, ammonium bicarbonate, ammonium add carbonate NH4HCO3, white solid, soluble, formed by reaction of NH4OH and excess CCL. This salt is the important reactant in the ammonia soda process for converting sodium chloride in solution into sodium hydrogen carbonate solid. 

Manuf./Distrib. Aldrich http //www.sigma-aldrich.com Alfa Aesar http //www.alfa.com BASF http //www.basf.com Fluka http //www.sigma-aldrich.com ICN Biomed. Research Prods, http //www.icnbiomed.com Pfaltz Bauer http //www.pfaitzandbauer.com TCI Am. http //www.tciamerica.com Ammonium carbonate CAS 506-87-6 8000-73-5 10361-29-2 EINECS/ELINCS 233-786-0 UN 9084 INS503(i) E503 Synonyms Carbonic acid, ammonium salt Carbonic acid, diammonium salt Diammonium carbonate Hartshorn... 

Zirconyl acetate. See Zirconium acetate Zirconyl ammonium carbonate CAS 32535-84-5... 

Mix 42 5 g. of acetone cyanohydrin (Section 111,75) and 75 g. of freshly powdered ammonium carbonate in a small beaker, warm the mixture on a water bath FUME CUPBOARD) and stir with a thermometer. Gentle action commences at 50° and continues during about 3 hours at 70-80°. To complete the reaction, raise the temperature to 90° and maintain it at this point until the mixture is quiescent (ca. 30 minutes). The colourless (or pale yellow) residue solidifies on coohng. Dissolve it in 60 ml. of hot water, digest with a little decolourising carbon, and filter rapidly through a pre-heated Buchner funnel. Evaporate the filtrate on a hot plate until crystals appear on the surface of the liquid, and then cool in ice. Filter off the white crystals with suction, drain well, and then wash twice with 4 ml. portions of ether this crop of crystals of dimethylhydantoin is almost pure and melts at 176°. Concentrate the mother liquor to the crj staUisation point, cool in ice, and collect the... 

Carbonates. Basic zirconium carbonate [37356-18-6] is produced in a two-step process in which zirconium is precipitated as a basic sulfate from an oxychloride solution. The carbonate is formed by an exchange reaction between a water slurry of basic zirconium sulfate and sodium carbonate or ammonium carbonate at 80°C (203). The particulate product is easily filtered. Freshly precipitated zirconium hydroxide, dispersed in water under carbon dioxide in a pressure vessel at ca 200—300 kPa (2—3 atm), absorbs carbon dioxide to form the basic zirconium carbonate (204). Washed free of other anions, it can be dissolved in organic acids such as lactic, acetic, citric, oxaUc, and tartaric to form zirconium oxy salts of these acids. 

Cupferon ammonium salt (7V-nitroso-7V-phenylhydroxylamine ammonium salt) [135-20-6] M 155.2, m 150-155°(dec), 162.5-163.5°, 163-164°, pK 4.16 (free base). Recrystd twice from EtOH after treatment with Norite and finally once with EtOH. The crystals are washed with diethyl ether and air dried then stored in the dark over solid ammonium carbonate. A standard soln (ca 0.05M prepared in air-free H2O) is prepared daily from this material for analytical work and is essentially 100% pure. [Anal Chem 26 1747 1954.] It can also be washed with Et20, dried and stored as stated. In a sealed, dark container it can be stored for at least 12 months without deterioration. Xmax 260nm (CHCI3). [Org Synth Coll Vol I 77 1948 J Am Chem Soc 78 4206 7956.] Possible CARCINOGEN. 

H.Koch, Ann 232, 227 (1886) 3)G.C.Hale, USP2430874 (1947) CA 43, 691(1949XDes-criptipn of prepn from ammonium carbonate and an ethylene derivative such as ethylene-... 

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)... 

Combustion. 1) V.E. Annikov et al, Effect of Water, Ammonium Carbonate and other Additives on Combustion of Explosives , FizGoreniya-Vzryva 5 (1), 60-67 (1969) CA 71, 40905 (1969) [The authors state that the effects of w on the burning rate of Tetryl and RDX in a constant pressure bomb can be explained by the Zel dovich (1942) theory. They report that the burning rate of RDX with iO to 20% w added is higher because of strong turbulence] 2) M A. 

By the double decomposition of calcium nitrate and ammonium carbonate (or sulfate) in solution Ca(NO,), + (NH4),CO, - CaCO, + 2NH4NO,... 

Calcium (II), Ca+2 Ammonium carbonate Dilute sulfuric acid Ammonium oxalate... 

Ammonium carbonate, (NH4)2C03 Potassium iodide, KI Potassium iodate, KI03 Calcium turnings, Ca Iron filings, Fe Mossy zinc, Zn Lead shot, Pb... 

Figure 7. Drawing of ammonium carbonate recovery unit and evaporator rated input capacity is 0.8 and 1.5 L/h with and without foaming respectively A, metering tank with preheater B, ammonium carbonate distillation, 0.5 kW C, foam level sensor (conductivity) D, condenser E, acid inlet, 6M HNOs F, evaporation unit, 1 kW G, Ca 2M (NHlt)2COi, to carbonate adjustment with C02 H, distillate, HzO + NOx I, metal nitrate concentrate, ca. 0.5M HNOs J, electrical immersion heater...

In a much earlier patent, the removal of organics from exhaust gases by oxidation over a supported uranium oxide catalyst was reported by Hofer and Anderson [39]. The catalyst was 4% U3O8 supported on alumina spheres. The authors used the incipient wetness technique to impregnate alumina with uranyl nitrate solution. In this case the catalyst precursors were calcined at 700°C for 3 h to decompose the uranium salt. The use of other uranium compounds as starting materials was mentioned and these included uranyl acetate, uranium ammonium carbonate and uranyl chloride. The alumina-supported catalyst had a surface area of ca 400m g and further added components, such as copper, chromium and iron, were highlighted as efficient additives to increase activity. 

This method however cannot remove the sodium impurity which disturbs the red colour of the flame. Strontium carbonate of high purity is obtained when ammonium carbonate is added to strontium nitrate solution to precipitate it. If Ca or Ba is present in the solution, it precipitates at the same time and the separation from the strontium carbonate is difficult. 

Octadecyl (octyl) bonded phase with low percentage of free silanol groups ION-SUPPRESSION MODE methanol (acetonitrile) -water containing ca. 0.01 - 0.1 M phosphate buffer, ammonium carbonate or sodium acetate (pH 4-7). 

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