Ammonium Acetate Oxalate

A) AMMONIUM SALTS. R COONH4. Ammonium salts of formicy acetic oxalic, succinic, tartaric, citric acid benzoic, salicylic (and other substituted benzoic acids) phthalic and cinnamic acids. 

AMMO 2.5 EC , cypermetlu-in, 13 Ammonia, 13 Ammonium acetate, 13 Ammonium arsenate, 13 Ammonium benzoate, 13 Ammonium bicarbonate, 13 Ammonium bifluoride, 14 Ammonium bisulfite, 14 Ammonium carbamate, 14 Ammonium carbonate, 14 Ammonium chloride, 14 Ammonium chlorplatmate, 14 Ammonium clu omate, 14 Ammonium citrate, 14 Ammonium diclu omate, 14 Ammonium fluoride, 14 Ammonium fomiate, 15 Ammonium hexafluorosilicate, 15 Ammonium hydroxide, 15 Ammonium metavanadate, 15 Ammonium molybdate, 15 Ammonium nitrate, 15 Ammonium oxalate, 15 Ammonium perfluorooctanoate, 15 Ammonium persulfate, 15 Ammonium phosphate, 15 Ammonium picrate, 16 Ammonium salicylate, 16... 

Ammonium acetate Ammonium adipate Ammonium benzoate Ammonium bicarbonate Ammonium biflluoride Ammonium binoxalate Ammonium bisulfate Ammonium bitartrate Ammonium tetraborate Ammonium bromide Ammonium carbonate Ammonium chloride Ammonium citrate Ammonium diclnomate Ammonium fluoride Ammonium fluorosilicate Ammonium gluconate Ammonium iodide Ammonium molybdate Ammonium nitrate Ammonium oxalate Ammonium perchlorate Ammonium picrate Ammonium polysulfide Ammonium salicylate Ammonium stearate Ammonium sulfate Ammonium sulfide (hydrosulfide) Ammonium tartrate Ammonium tliiocyanate Ammonium thiosulfate... 

The amount of reddish-purple acid-chloranilate ion liberated is proportional to the chloride ion concentration. Methyl cellosolve (2-methoxyethanol) is added to lower the solubility of mercury(II) chloranilate and to suppress the dissociation of the mercury(II) chloride nitric acid is added (concentration 0.05M) to give the maximum absorption. Measurements are made at 530nm in the visible or 305 nm in the ultraviolet region. Bromide, iodide, iodate, thiocyanate, fluoride, and phosphate interfere, but sulphate, acetate, oxalate, and citrate have little effect at the 25 mg L 1 level. The limit of detection is 0.2 mg L 1 of chloride ion the upper limit is about 120 mg L . Most cations, but not ammonium ion, interfere and must be removed. 

Furo[3,4-e)(l,2,4]triazines 204 (91 MI 1) were prepared by the reaction of 199 or its analogues with aroylhydrazines in the presence of ammonium acetate in acetic acid. Similarly, the respective 3,3 -bis(furo[3,4-e](l,2,4]triazine) was prepared by reacting 199 with oxalic acid hydrazide (91MI5). 

Many of these salts melt or sublime before or during decomposition and reaction temperatures generally increase with molar mass. Thermal analyses for a selection of ammonium carboxylates have been given by Erdey et al. [915] who conclude that the base strength of the anion increases with temperature until it reaches that of NH3. Decompositions of ammonium acetate (>333 K) and ammonium oxalate (>473 K) proceed through amide formation. Ammonium benzoate and ammonium salicylate sublime (>373 K) without decomposition but ammonium citrate decomposes (>423 K) to yield some residual carbon. 

Plumes from biomass burning can also have unique signatures. For example, organics, ammonium, potassium, sodium, nitrate, nitrite, sulfate, chloride, phosphate, elemental carbon, and the anions of organic acids (formate, acetate, oxalate, etc.) have all been measured in particles in the plumes from burning vegetation (e.g., see Cofer et al., 1988 Andreae et al., 1988 and Artaxo et al., 1994). 

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... 

Heavy Metals and Earths. — The solution of 5 gm. of ammonium acetate in 100 cc. of water should not lie affected by hydrogen sulphide water. Furthermore, the addition of ammonia water and ammonium oxalate solution should cause neither a coloration nor a turbidity. 

Ammonium Acetate, Carbonate, Nitrate, Oxalate, and Phosphate. All induce rapid decomposition of sodium hypochlorite.6... 

Separation. Cerium and thorium salts are precipitated in Group IIIA. They may be separated from the other metals of the group by dissolving the precipitate in dilute HC1 and adding oxalic acid solution, when the oxalates of both metals are precipitated. The thorium and cerium may be separated (a) by dissolving the thorium oxalate in a mixture of ammonium acetate solution and... 

Extraction of Sedimentary Constituents. The proportion of the total concentration of Fe, Mn and Zn removed from the estuarine sediments by the different extractants varied widely among sampling stations (Table II). Hydrochloric acid, acetic acid and ammonium oxalate removed a similar proportion of total Zn from all sediments. Concentrations of Zn well above detection limits were also fo-iind in the ammonia, hydroxyl-amine and ammonium acetate extracts. The quantity of Zn removed from oxidized sediments by the latter two extractants was significantly greater than reported in previous studies in which reduced sediments were extracted ( ). 

Correlation coefficients shoving the relation of Zn to Fe, Mn, organic carbon and particle size in sediments extracted vith either acetic acid, hydroxylamine hydrochloride in 0.01 nitric acid, ammonium oxalate, ammonium acetate, or concentrated nitric acid. English data vcre log transforried for statistical analysis. 

Coefficients exceeding those between Scrobicularia and sedimentary Zn alone (from Table II). Subscript identification numbers are l=ammonium acetate 3=hydrochloric acid =oxalate 6=concentrated nitric acid. 

Figure 6. Zinc concentrations in Scrobicularia plana from southwest England as related to (a, above) ammonium acetate-soluble Zinc in sediments from southwest England (r = 0.62) (h, top right) the product of ammonium acetate-soluble zinc and the ratio of humic substance concentrations (H) (absorbance in a IN ammonia extract) to total organic carbon (C) (r = 0.82) and (c, bottom right) the product of (ZnAmAc) X (H/C) X (Muoxai) whcrc Muoxai = oxalate soluble manganese where present at concentrations > 350 ixg/g (r = 0.84).

Superdegumming. Citric acid is used as a reagent to degum oil at a temperature above 50 °C. Phospholipid levels as low as 7-30 ppm can be achieved in refined oil. Various other degumming agents have also been proposed, including sodium chloride solutions, ammonium hydroxide, and acetic, oxalic, boric, and nitric acids (13). 

This is exactly analogous to the relation between ammonium acetate, acetamide and acetic nitrile or methyl cyanide (p. 148). As cyanogen is a t/ -cyanide or a intermediate product formed by the hydrolysis of only one nitrile group. Such a compound would be cyano formic acid and a semi-nitrile of oxalic acid. 

Figures 1 and 2 show relationships among concentrations of U and selected major and trace elements in spinach leaves and petioles, respectively. It is noteworthy that concentrations of U in spinach were significantly positively correlated (p<0.01) with concentrations of Fe and A1 in both leaves and petioles. These relationships suggested that the absorption and transport processes of U in spinach could be related to those of Fe and Al, as was also suggested by Kametani et al. who showed that plants with higher Fe concentrations tended to absorb more U. Less U was extracted by 1 mol L ammonium acetate solution from soil (Table 2), meaning that U in soil was less available to plants. Spinach favours neutral-to-weak alkaline conditions and has the ability to acquire insoluble mineral nutrients such as Fe under neutral-to-alkaline conditions. Helal et al. compared spinach and beans with respect to the ability of the root to uptake Fe and found that spinach root absorbed Fe more efficiently. The differences in Cu, Zn, and Cd uptake by two spinach cultivars were attributed to different abilities to exude oxalate, citrate, and malate from root l The application of organic acids to soil facilitated the phytoextraction of U by hyperaccumulator plants thus, those root exudates could induce U dissolution from soil. Since part of U is associated with Fe and Al minerals in the soil it was likely that the absorption of U was accompanied by Fe and Al absorption, possibly triggered by the secretion of protons or organic acids to solubilise Fe and Al from soil.

The performance of the FBI can be enhanced by the use of (volatile) additives, such as ammonium acetate, formate, or oxalate, to the mobile phase [92]. They are assumed to act as carriers. Similarly, the use of additives with structures related to the target analyte structures, e.g., phenoxyacetic acid in the analysis of chlorophenoxyacetic acids, was evaluated as well [93]. The carrier effects, exerted by either mobile-phase additives, coeluting compounds, and/or isotopically-labelled standards, is not really understood from a mechanistic point of view. It caimot be applied to consistently enhance the performance for some compounds it works fine, while for others no effects are observed. 

McAlister, J.J. Smith, B.J. (1999) Selectivity of ammonium acetate, hydroxyl-amine hydrochloride and oxalate/ascorbic acid solutions for the speciation of Fe, Mn, Zn, Cu, Ni and A1 in early Tertiary paleosols. Microchemical Journal 63, 415 126. 

Color reactions Boric acid (hydroxyquinones). Dimethylaminobenzaldehyde (pyrroles). Ferric chloride (enols, phenols). Haloform test. Phenylhydrazine (Porter-Silber reaction). Sulfoacetic acid (Liebermann-Burchard test). Tetranitromethane (unsaturation). Condensation catalysts /3-Alanine. Ammonium acetate (formate). Ammonium nitrate. Benzyltrimethylammonium chloride. Boric acid. Boron trilluoride. Calcium hydride. Cesium fluoride. Glycine. Ion-exchange resins. Lead oxide. Lithium amide. Mercuric cyanide. 3-Methyl-l-ethyl-2-phosphoiene-l-oxlde. 3-Methyl-1-phenyi-3-phoipholene-1-oxide. Oxalic acid. Perchloric acid. Piperidine. Potaiaium r-butoxIde. Potassium fluoride. Potassium... 

Figure 3-7 Comparison of Zinc-"Pools" in A Sample of Heat Processing Residues Before and After Treatment with pH 5/400 mV Solutions (AC = Ammonium Acetate OX = Oxalate Buffer Solution HP = Peroxide-Extraction NA = Residual Fraction)...

AMMONIUM OXALATE, ANHYDROUS (1113-38-8) CjHsNj04 (Fire Rating 1). Incompatible with acids, ammonium acetate furfliryl alcohol, silver, sodium chlorite, sodium hypochlorite oxidizers. Attacks many metals. Heat of decomposition or fire produces fumes of ammonia, nitrogen oxides, carbon monoxide, carbon dioxide, formic acid. Attacks steel. On small fires, use foam, dry powder, water, or CO2 extinguishers. 

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