Sulfamic acid ammonium salt

SYNS AMCIDE O AMICIDE AMMAT AMMATE AMMONIUM AMIDOSULFONATE AMMONIUM AMIDOSULPHATE AMMONIUM-SALZ der AMIDOSULFONSAEURE (GERMAN) AMMONIUM SULPHAMATE AMS IKURIN MONOAMMONIUM SULFAMATE SULFAMATE SULFAMIC ACID, MONOAMMONIUM SALT SULFAMINSAEURE (GERMAN)... 

The preparation of imides was reviewed recently and many methods are recommended. - Under somewhat drastic conditions ( > 200 °C) dicarboxylic acids react with ammonia, or compounds which are able to produce ammonia like urea, thiourea, formamide, sulfamic acid, ammonium carbonate and others to form cyclic imides (equation 52). Monoammonium salts of dicarboxylic acids give imides under pyrolytic conditions when distilled under reduced pressure. ... 

Synonyms Ammonium amidosulfate AMS Monoammonium sulfamate Sulfamic acid, monoammonium salt... 

Sulfamic acid, dimethyl-, 5-butyl-2-(ethylamino)-6-methyl-4-pyrimidinyl ester. See Bupirimate Sulfamic acid, monoammonium salt. See Ammonium sulfamate Sulfamidic acid. See Sulfamic acid p-Sulfamidoaniline Sulfamidyl. See Sulfanilamide... 

Synonyms Ammate Ammonium Amidosulfonate Ammonium Amidosulfonate Ammonium Amidosulphate AMS Sulfamic Acid, Monoammonium Salt Chemical Formula NH2SO3NH4 (ii) Observable Characteristics... 

Aqueous sulfamic acid solutions are quite stable at room temperature. At higher temperatures, however, acidic solutions and the ammonium salt hydroly2e to sulfates. Rates increase rapidly with temperature elevation, lower pH, and increased concentrations. These hydrolysis reactions are exothermic. Concentrated solutions heated in closed containers or in vessels having adequate venting can generate sufficient internal pressure to cause container mpture. An ammonium sulfamate, 60 wt % aqueous solution exhibits mnaway hydrolysis when heated to 200°C at pH 5 or to 130°C at pH 2. The danger is minimised in a weU-vented container, however, because the 60 wt % solution boils at 107°C (8,10). Hydrolysis reactions are ... 

Sulfamic acid readily forms various metal sulfamates by reaction with the metal or the respective carbonates, oxides, or hydroxides. The ammonium salt is formed by neutralizing the acid with ammonium hydroxide ... 

Organic Reactions. Primary alcohols react with sulfamic acid to form alkyl ammonium sulfate salts (21—23) ... 

Amides react ia certain cases to form ammonium salts of sulfonated amides (22). For example, treatment with ben2amide yields ammonium A/-ben2oylsulfamate [83930-12-5] C H CONHSO NH, and treatment with ammonium sulfamate yields dianmioiiiumimidodisulfonate [13597-84-17, HN(S020NH 2 Ammonium sulfamate or sulfamic acid and ammonium carbonate dehydrate Hquid or soHd amides to nitriles (27). 

By-Products and Waste Disposal. A by-product of sulfamic acid manufacturing is fuming sulfuric acid or dilute sulfuric acid. The amount of sulfuric acid (as 100% H2SO is 1—1.5 times as much by weight as the sulfamic acid product. This by-product also contains ammonium salts and is therefore normally used as raw material for fertilizer (see Fertilizers). 

Ammonium sulfamate is also produced and commercially available in Japan. It is packed in 25-kg net weight paper bags and 500-kg resinous dexible containers. The tmddoad price (fob Japan) is 1.5— 3/kg. Other sulfamates, eg, nickel sulfamate and aluminum sulfamate, are commercially available. The primary salts manufactured from sulfamic acid in the United States are the ammonium and nickel sulfamates. These salts of sulfamic acid are used mainly in electroplating. 

Zinc chloride is a Lewis acid catalyst that promotes cellulose esterification. However, because of the large quantities required, this type of catalyst would be uneconomical for commercial use. Other compounds such as titanium alkoxides, eg, tetrabutoxytitanium (80), sulfate salts containing cadmium, aluminum, and ammonium ions (81), sulfamic acid, and ammonium sulfate (82) have been reported as catalysts for cellulose acetate production. In general, they require reaction temperatures above 50°C for complete esterification. Relatively small amounts (<0.5%) of sulfuric acid combined with phosphoric acid (83), sulfonic acids, eg, methanesulfonic, or alkyl phosphites (84) have been reported as good acetylation catalysts, especially at reaction temperatures above 90°C. 

Buffers are necessary to adjust and maintain the pH. Buffering agents can be salts of a weak acid and a weak base. Examples are ammonium, potassium, sodium carbonates (caustic soda), bicarbonates, and hydrogen phosphates [1345]. Weak acids such as formic acid, fumaric acid, and sulfamic acid also are recommended. Common aqueous buffer ingredients are shown in Table 17-8. 

The practical route for oxidizing leuco diphenylmethanes 15 demands inital conversion to an imine salt 16. The imine salt is obtained by heating a mixture of diphenylmethane, sulfur, ammonium chloride, and sodium chloride at 175°C in a current of ammonia or by heating a mixture of diphenylmethane, urea, sulfamic acid, sulfur, and ammonia at 175°C (Scheme 3). Dyes 16 can be represented as the quinonoid resonance structure 17. Dyes of this class, known as auramines, are all yellow, with the only commercial representative being auramine O 16a. Due to its poor lightfastness and instability to hot acids and bases, its use has been restricted to dyeing and printing cotton, paper, silk, leather, and jute. 

Nitrogen Compounds. Mixtures of ammonia and chlorine are explosive hydrazine and hydroxylamine ignite in chlorine.21"24 Formation of the dangerously explosive nitrogen trichloride is possible during chlorination of alkylthiuronium salts.25 Aziridine readily forms the explosive N-chloro derivative.26 Chlorination of sulfamic acid or acidic ammonium chloride solutions can give the powerfully explosive oil, nitrogen trichloride.27... 

Note Miscellaneous uses include cyanuric acid for chlorinated isocyanurates, crystalline adducts, deicing agents, pharmaceutical intermediates and sulfamic acid and its ammonium salt. 

Using a new process, ADN can be prepared in a very environmentally friendly manner (without the use of chlorinated organic solvents) by the direct nitration of salts (potassium or ammonium) of sulfamic acid (amidosulfonic acid, H2N-S03H) using mixed acid (HN03/H2S04) ... 

The above mentioned hydroxy and epoxy functional silanes represent reactive intermediates which can be transformed into ionic trimethyl silane derivatives. To give an example, hydroxyhexyltrimethylsilane can be reacted with sulfamic acid in the presence of a polar aprotic solvent such as f -methyl pyrrolidone or dimethyl formamide. The transformation of the ammonium salt into the appropriate alkyl ammonium derivative is readily achieved by addition of amine under generation of ammonia gas. 

Hydrofluoric add Sulfamic acid Dissolves silicate deposits Dissolves calcium salts As an additive to HCI (as ammonium bifluoride) As an additive to HCI ... 

NITRIC ACID, MAGNESIUM SALT (10377-60-3) A powerful oxidizer. Reacts violently with dimethylformamide, reducing agents, combustible materials, fuels, organic substances, metal powders, potassium hexanitrocobalite(III) (C.I. pigment yellow), sodium acetylide, and easily oxidizable matter. Incompatible with aluminum, ammonium hexacyano-ferrate(II), tert-butylhydroperoxide, citric acid, ethanol, ferrocyanides, hydrazinium perchlorate, isopropyl chlorocarbonate, metal phosphinates, nitrosyl perchlorate, organic azides, phosphorus, sodium thiosulfate, sulfamic acid, thiocyanates, tin(II) fluoride, and many other substances,... 

NITRIC ACID, ZINC SALT (7779-88-6) Noncombustible, but will enhance the combustibility of other materials. Many chemical reactions can cause fire and explosions. A strong oxidizer. Violent reaction with reducing agents, strong oxidizers, combustible materials, organic substances, metallic powders, acetic anhydride, tert-butylhydroperoxide, carbon, dimethylformamide, metal cyanides, metal sulfides, phosphorus, sodium acetylide, sulfur, thiocyanates. Incompatible with amines, ammonium hexacyanoferrate(II), boranes, cyanides, citric acid, esters, hydrazinium perchlorate, isopropyl chlorocarbonate, nitrosyl perchlorate, organic azides, organic bases, sodium thiosulfate, sulfamic acid. Attacks metals in the presence of moisture. 

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