Ammonium hydrogen carbonate

Ammonium carbonate peroxohydrate, (NH 2 02 H2O2, first reported in 1980 (31), is crystalli2ed from a solution of ammonium hydrogen carbonate in aqueous hydrogen peroxide. The vibrational spectmm confirms the presence of molecular hydrogen peroxide. The compound is unstable and unlikely to find commercial appHcation. 

Ammonium bicarbonate, also known as ammonium hydrogen carbonate or ammonium acid carbonate, is easily formed. However, it decomposes below its melting point, dissociating into ammonia, carbon dioxide, and water. If this process is carefully controlled, these compounds condense to reform ammonium bicarbonate. The vapor pressures of dry ammonium bicarbonate are shown below (7). (To convert kPa to mm Hg, multiply by 7.5.)... 

Materials containing the above structure in the polymer chain may be made from copolymers of methacrylic acid and methacrylonitrile. Ammonia-producing additives (such as urea and ammonium hydrogen carbonate) are added to the... 

Such reactions can be promoted by exposing the chromatogram to the vapors of hydrogen halides, to nitric acid fumes [4], to ammonia or oxides of nitrogen [2] in suitable reaction chambers [10]. Ammonium hydrogen carbonate, first proposed by SEGxmA and Gono is also suitable [11]. 

Aminotriptyline lb 100-102 Amitrol lb 418 Ammonia la 86, 87,166 -, dipole moment la 97 Ammonium cations la 144 Ammonium compounds, quaternary lb 48,292,358 -, quaternary salts lb 48 Ammonium hydrogen carbonate, vapor la 86... 

C03-0068. Write chemical formulas for these compounds (a) potassium chlorate (b) ammonium hydrogen carbonate (c) iron(II) phosphate (d) copper(II) nitrate hexahydrate (e) aluminum chloride (Q cadmium(II) chloride and (g) potassium oxide. 

With or without acids, alkalis, salts, with exception of aimnonium and sulfite With or without acids, alkalis, salts, in presence of sulfites (sulfurous acid, Na or K sulfite and bisulfite) no ammonium compounds used With or without acids, alkalis, salts, in presence of ammonium compounds (hydroxide, carbonate, ammonium hydrogen carbonate, phosphate) no sulfite used With or without acids, alkalis, salts, in presence of ammonium compounds and sulfite... 

The partially hydrolysed material was fractionated by size exclusion chromatography on a Bio Gel PIO (Bio Rad) column (2,6 x 90 cm) and eluted with 50 mM ammonium hydrogen carbonate at 20 ml/h and fractions of 3.2 ml each were collected. Fractions 45-70 were pooled and subjected to HPAEC-PAD for further separation. 

Decontamination of the treated samples with mixture of air and vaporized ammonia was conducted in a thermal chamber (fig. 3) with flows of purified dry air and evaporated ammonia through desorbers. Ammonia was produced form crystalline ammonium hydrogen carbonate. An evaporator filled with a 10% solution of hydrogen carbonate is heated to 80°C and subsequently assembled to the system for purified dry air. 

The equations that represent the reactions with water support the prediction that NH4NO3 dissolves to form an acidic solution and Na3P04 dissolves to form a basic solution. Calcium chloride is the salt of a strong base-strong acid, so neither ion reacts with water and the solution is neutral. Both ions in ammonium hydrogen carbonate react with water. Because Kt, for HCOs" is greater than for NH4, the salt dissolves to form a weakly basic solution. 

Synonyms ammonium hydrogen carbonate ammonium acid carbonate... 

Synonym Ammonia Water Amfbnioformaldehyde Ammonium Acetate Ammonium Acid Fluoride Ammonium Amidosulfonate Ammonium Amidosulphate Ammonium Benzoate Ammonium Bicarbonate Ammonium Bichromate Ammonium Bifluoride Ammonium Carbonate Ammonium Chloride Ammonium Citrate Ammonium Citrate, Dibasic Ammonium Decaborate Octahydrate Ammonium Dichromate Ammonium Disulfate-Nickelate (II) Ammonium Ferric Citrate Ammonium Ferric Oxalate Trihydrate Ammonium Ferrous Sulfate Ammonium Fluoride Ammonium Fluosilicate Ammonium Formate Ammonium Gluconate Ammonium Hydrogen Carbonate Ammonium Hydrogen Fluoride Ammonium Hydrogen Sulfide Solution Ammonium Hydroxide Ammonium Hypo Ammonium Hyposulfite Ammonium Iodide Ammonium Iron Sulfate Ammonium Lactate Ammonium Lactate Syrup Ammonium Lauryl Sulfate Ammonium Molybdate Ammonium Muriate Ammonium Nickel Sulfate Ammonium Nitrate Ammonium Nitrate-Urea Solution Ammonium Oleate... 

If the conjugate becomes insoluble, precipitate completely with 4—5 vol of ice-cold acetone at-70°C for 30 mm. Briefly warm at room temperature. Pour off the supernatant and air-dry Resuspend in saline as m Section 3 1, step 4. Alternatively, if the conjugate remains soluble, desalt the solution on a 20-mL Sephadex G25 column using ammonium hydrogen carbonate buffer, pH 7 5. Collect 2-mL fractions, and pool those of OD280 > 0.4 Store at -20°C. 

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. 

Note. (1) Alternatively use 225 g of ammonium carbonate , 175 ml of water and 250 ml (4.5 mol) of concentrated ammonia solution. Ammonium carbonate is a mixture of roughly equimolar amounts of ammonium hydrogen carbonate and ammonium carbamate (NH4HC03-NH2C02NH4). 

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