Diammonium carbonate

DIAMMONIUM CARBONATE see ANEOOO DIAMMONIUM CHROMATE see ANF500 DIAMMONIUM CITRATE see ANF800 DIAMMONIUM FLUOSILICATE see COEOOO DIAMMONIUM HEXACHLOROPLATINATE (2-) see ANF250... 

The hexamethylene di-isocyanate is prepared by dissolving hexamethylene-diamine in dichlorobenzene, converting into hexamethylene diammonium carbonate by passing COj into the solution and then treating with phosgene ... 

AI3-25347 Ammonia sesquicarbonate Ammonium carbonate Ammoniumcarbonat Carbonate d ammoni-aque Carbonic acid, diammonium salt Caswell No. 042 CCRIS 7328 Diammonium carbonate EINECS 208-058-0 ERA Pesticide Chemical Code 073501 HSDB 6305 Salt of Hartshorn. Also typically contains ammonium carbamate. Crystals mp = 58 (dec) vaporizes at about 60° incompatible with acids and acid salts soluble in H2O (25 g/100 ml). 

Synonyms CAS 506-87-6 carbonic acid, ammonium salt diammonium carbonate CRYSTAL AMMONIA AMMONIUM SESQUICARBONATE HARTSHORN... 

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... 

Hydronitric acid or nitric acid Carbon chloride or carbon tetrachloride Aluminum bromide or aluminum tribromide Tin oxide, tin(IV) oxide, or tin dioxide Ammonium carbonate, diammonium carbonate, or ammonium tricarbonate... 

Synonyms Carbonic acid, ammonium salt Carbonic acid, diammonium salt Diammonium carbonate Hartshorn... 

Diaminopentane. See 1,3-Pentanediamine Diammonium carbonate. See Ammonium carbonate Diammonium cocamine di (methylene phosphonate)... 

Coesite. Coesite, the second most dense (3.01 g/cm ) phase of silica, was first prepared ia the laboratory by heating a mixture of sodium metasibcate and diammonium hydrogen phosphate or another mineraliser at 500—800°C and 1.5—3.5 GPa (14,800—34,540 atm). Coesite has also been prepared by oxidation of silicon with silver carbonate under pressure (67). The stmcture is monoclinic = 717 pm, Cg = 1.238 pm, and 7 = 120°. 

A mixture of 1.44 g. (0.0099 mole) of indole-3-carboxaldehyde,2 7.0 g. (0.053 mole) of diammonium hydrogen phosphate, 30 g. (30 ml., 0.34 mole) of 1-nitropropane, and 10 ml. of glacial acetic acid is refluxed for 12.5 hours. During the reflux period the pale-yellow mixture becomes dark red. The volatile reactants and solvent are removed under reduced pressure, and an excess of water is then added to the dark residue. After a short time, crude indole-3-carbonitrile precipitates rapidly. It is separated by filtration and dried under reduced pressure weight 1.20-1.34 g. (85-95%). Crystallization from acetone-hexane, with decoloriza-tion by activated carbon, yields 0.68-0.89 g. (48-63%) of fairly pure indole-3-carbonitrile, m.p. 179.5-182.5° (Note 1). 

One such agent is prepared by NBS and peroxide bromination of ethyl 4-chiorophenylacetate (108) to give 109. This is converted by sodium hydride to the benzylic carbene, which is inserted into the double bond of ethyl acrylate to give cis-cyclopropane 110. Partial saponification cleaves the less hindered ester moiety to give 111. This is next converted to the alkoxyimide (112) on reaction with diethyl carbonate and diammonium phosphate. Stronger base (NaOEt)... 

Shake flask studies were carried out at 39°C in 125-ml Erlenmeyer flasks containing 40 ml of medium (180 rpm, 2.5 cm dia cycle). The carbon nitrogen ratio was varied by increasing or decreasing the diammonium tartrate supply, and Mn(II) added as specified. A spore inoculum was used (0.5 to 1.0 10 spores/ml final concentration). 

Figure 2. Effects of carbon and nitrogen limitation on the production of LiP and MnP activities. Carbon limited cultures ( ) Nitrogen limited cultures ( ). Carbon limited cultures contained per liter 0.66 g diammonium sulfate and 2 g glucose. Nitrogen limited cultures were the same as the controls. They contained 0.2 g diammonium tartrate and 10 g glucose. All cultures received 11.2 ppm Mn(II).

Amides react in certain cases to form ammonium salts of sulfonated amides (22). For example, treatment with benzamide yields ammonium A-benzoylsulfamate [83930-12-5], C5H5C0NHS03 NH4, and treatment with ammonium sulfamate yields diammonium imidodisulfonate [13597-84-1], HN(S020NH4)2. Ammonium sulfamate or sulfamic acid and ammonium carbonate dehydrate liquid or solid amides to nitriles (27). 

Hydrazine Azide (formerly called Hydrazine Azoimide,Hydrazine Trinitride or Hydrazonium Azide) (called by Curtius Diammonium Azide, N,H ), NaH, HN, mw 75.08, N93.29% rhmb, hygr crysts mp 75.4(Ref 6) v sol in w, sol in hydrazine(190% at 23 ), methanol (6.1% at 23°) and in ale (1.2% at 23°C), not appreciably sol in chlf, carbon tetrachloride benz, carbon disulfide, ethyl acetate or diethyl ether (Ref 6). First prepd by Curtius in I89I (Ref 1) by neutralizing hydrazoic acid with hydrazine... 

Ceric ammonium nitrate Cerate(2-), hexanitrato-, diammonium Cerate(2-), hexakis(nitrato-O)-, diammonium, (OC-6-11) (16774-21-3), 67,141 Cerium(ill) chloride, heptahydrate (18618-55-8), 69, 89 Cesium carbonate Carbonic acid, dicesium salt (534-17-8), 65, 150 CESIUM THIOLATES, 65, 150 Chiral auxiliary, 65, 173, 183, 203, 215 Chiral oxazolidinone auxiliary, from phenylalanine, 68, 77, 83 Chirasil-Val, 66, 153, 154... 

Satonaka and Ito (53) obtained reduced smoke from fir and oak treated with either ammonium sulfate or diammonium phosphate, or with the commercially used formulations pyresote or minalith. (Pyresote consists of zinc chloride 35 percent, ammonium sulfate 35 percent, boric acid 25 percent, and sodium dichromate 5 percent. Minalith consists of ammonium sulfate 60 percent, diammonium phosphate 10 percent, boric acid 20 percent, and borax 10 percent.) They also obtained reductions in carbon monoxide and carbon dioxide levels compared to the untreated wood with each of the four treatments at the two pyrolysis temperatures employed, 400°C and 700°C. 

Hydroxylamine sulfate is usually prepared in a modified Raschig method that starts with air oxidation of ammonia. The nitrogen oxides are reacted with ammonium carbonate to produce ammonium nitrite and carbon dioxide [see Eq. 21.3)]. The ammonium nitrite solution then reacts with sulfur dioxide to give hydroxylamine diammonium sulfate, which is hydrolyzed to hydroxylamine sulfate and by- product ammonium sulfate46,266. 

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