ammonium bicarbonate


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ammonium bicarbonate

[ə′mōn·yəm bī′kär·bə‚nāt]
(inorganic chemistry)
NH4HCO3 White, crystalline, water-soluble salt; used in baking powders and in fire-extinguishing mixtures. Also known as ammonium hydrogen carbonate.
References in periodicals archive ?
Differently, the ammonium bicarbonate buffer provided lower recovery values with a high similarity of the extraction yields for raw and processed materials.
pH Inhibition (%) (%) SSi 2.0 4.4 100 (c) 3.0 4.3 100 (c) 0.25 7.3 73.7 (b) 0.5 7.4 100 (c) 1.0 7.7 100 (c) PSo 2.0 7.7 100 (c) 3.0 7.8 100 (c) 0.25 5.2 2.7 (a) 0.5 4.8 26.3 (b) 1.0 4.6 100 (c) Cch 2.0 4.4 100 (c) 3.0 4.2 100 (c) 0.25 4.9 65.8 (b) 0.5 4.8 100 (c) 1.0 4.6 100 (c) FeS 2.0 4.5 100 (c) 3.0 4.5 100 (c) -- 6.2 0.0 (a) Sodium silicate (SSi), potassium sorbate (PSo), calcium chelate (Cch), iron sulfate (FeS), ammonium bicarbonate (AB), ammonium oxalate (AO)
with different concentrations of urea [CO[(N[H.sub.2]).sub.2]], and ammonium bicarbonate [N[H.sub.4]HC[O.sub.3]] (industrial grade) to determine the average concentration of inhibition (IC50) and lethal concentration (LC100) for microalgae and predators respectively.
Ammonium bicarbonate and putrescine were obtained from commercial lures (Suterra, LLC; Bend, Oregon).
Although ammonium carbonate (([NH.sub.4])[H.sub.2][CO.sub.3]), ammonium bicarbonate ((N[H.sub.4])HC[O.sub.3]), and ammonium carbamate (([NH.sub.4])[H.sub.2]NC[O.sub.2]) have significant vapor pressures, they are easily handled as solids and can be compounded with BUR without difficulty.
Using information originally reported by the Chinese Ministry of Health to the World Health Organization and shared through the International Food Safety Authorities Network (INFOSAN), the authors describe the unfolding of events from the first reported cases of sick babies in China to the export of contaminated dairy and non-dairy products (including ammonium bicarbonate, fresh and dried eggs, nondairy creamer, and animal feed) that eventually reached 47 known countries.
Next, 10 mM dithiothreitol in 100 mM ammonium bicarbonate was added and the solution was incubated for 1 hr at 56[degrees]C.
26 November 2009 - The European Commission has said today its believes that the systematic checks currently in place on feed and food consignments originating in, or consigned from, China containing milk, milk products, soya or soya products and of ammonium bicarbonate, intended for food and feed are no longer necessary.
Under the toolbox, manufacturers have been reducing sugars; controlling cooking temperatures and times; replacing ammonium bicarbonate and other measures.
Although calcium carbonate may be used as a buffer, the process shown in Figure 2 uses ammonium bicarbonate. Laboratory experience indicates that high ammonium ion concentrations naturally inhibit methanogens; for safety, iodoform will be added also.
Moreover, the Commission has asked EU member states to carry out tests on all soy-based Chinese food products, as well as on yeast (ammonium bicarbonate), a product widely used in bakeries.
KUALA LUMPUR - Malaysia said Thursday 18 types of Khong Guan and Khian Guan brand biscuits have been found to contain excessive levels of the toxin melamine, with the source of contamination traced to the raising agent ''ammonium bicarbonate'' imported from China.