Monomethylamine

Votsmeier M, Song S, Davidson D F and Hanson R K 1999 Shock tube study of monomethylamine thermal decomposition and NH2 high temperature absorption coefficients int. J. Chem. Kinetics 31 323-30... 

Place a few drops of nitromethane in a test tube, add about 3 times as much concentrated hydrochloric acid, and then a piece of granulated tin. The tin dissolves in the acid and the nascent hydrogen produced reduces the nitromethane to monomethylamine ... 

TABLE 26-9 Vapor Pressure of Aqueous Ammonio/ Hydrochloric Acid, and Monomethylamine Solutions... 

FIG. 26-28 Relative hazard zones for anhydrous and aqueous monomethyl-amine releases—relative distance within which there is a specified atmospheric concentration of monomethylamine and aqueous monomethylamine. Hender-shot, 1988, hy permission. )... 

The relative size of hazard zones from possible loss of containment and releases to the atmosphere is much smaller for the cases in which the material is diluted, compared to the anhydrous materials. This is illustrated in Fig. 26-28 for monomethylamine. 

The larger circle is the area that could be exposed to a specified atmospheric concentration of monomethylamine stored as an anhydrous liquid. The smaller circle is the area that could be exposed to a specified atmo heric concentration of monomethylamine stored as an aqueous sohition. The elliptical figures represent a gas cloud caused by an east-southeast wind. 

Chemical Designations - Synonyms Aminomethane Mercurialin Monomethylamine, anhydrous Chemical Formula CHjNHj... 

Monoammonium phosphate Diammonium phosphate Nitric oxide Actylonitrile Caprolactam Monomethylamine Dimetliylamine Hexametliylenetetramine Trimetliylamine Monoethanolamine Dietlianolamine Trietlianolamine Hydrogen Cyanide Fatty nitrogen compounds (nitriles, amines, quaternary ammonimn compounds)... 

A solution of 10 g of 9 10-dihydro-9 10-ethano-(1 2)-anthracene-(9)aldehyde (made from anthracene and acrolein) and 10 g of monomethylamine in 100 cc of ethanol is heated at 80°C for 4 hours in an autoclave. The reaction mixture is then evaporated to dryness under reduced pressure to leave a crystalline residue which is dissolved in 150 cc of ethanol and, after the addition of 2 g of Raney nickel, hydrogenated at 40°C under atmospheric pressure. When the absorption of hydrogen has subsided, the catalyst is filtered off and the filtrate evaporated under reduced pressure. An oil remains which is covered with 100 cc of 2N hydrochloric acid. The 9-methylamino-methyI-9 10-dihydro-9 10-ethano-(9 10)-anthracene hydrochloride crystallizes immediately after crystallization from methanol it melts at 320°-322°C. 

Uses of Methylamines. Dimethylamine is the most widely used of the three amines. Excess methanol and recycling monomethylamine increases the yield of dimethylamine. The main use of dimethylamine is the synthesis of dimethylformamide and dimethylacetamide, which are solvents for acrylic and polyurethane fibers. 

Monomethylamin reagiert mit Dichloralan (Molverhaltnis 1 1) in Ather gemaB (134) zu dimer gelostem Methylamino-aluminiumdichlorid 116). Jedoch werden 2 Mol Ha entbunden bei der Umsetzung mit Monochlor-alan nach (135). Das aus der Losung ausfallende Methylimino-aluminium-chlorid halt hartnackig x/2 Mol Ather fest. [ClAlNMe]n ist formal ein... 

Monomethylamine, dehydrogenation, 41 178 Monomethyldecalins conformational analysis of, 18 56 equilibrium composition, conformations, and energies of, 18 63... 

Slurry explosives consist of saturated aqueous solutions of ammonium nitrate with sensitizing additives.[i-3] Nitrates such as monomethylamine nitrate, ethylene glycol mononitrate, or ethanolamine mononitrate are used as sensitizers. Aluminum powder is also added as an energetic material. Table 4.15 shows a typical chemical composition of a slurry explosive. It is important that so-called micro-bubbles are present within the explosives in order to facilitate the initial detonation and the ensuing detonation wave. These micro-bubbles are made of glass or polymeric materials. 

A mixture of AN and water forms a low-strength explosive referred to as a slurry or emulsion explosive. Since a mixture of AN and water cannot be detonated by initiation with a moderate detonation strength, to formulate practical slurry explosives nitrate esters such as monomethylamine nitrate, ethylene glycol mononitrate, or ethylamine mononitrate in conjunction with aluminum powder are added as sensitizers that facilitate the initiation of detonation. 

Primary Aliphatic Amines and Diamines Hexylamine Monomethylamine Primary Aliphatic Amines Pyridine and Substituted Pyridines Paraquat... 

Monomethylamine under Primary Aliphatic Amines and Diamines... 

Monomethylamine Nitrate solutions containing 10 to 15% water are used as sensitizers in Slurry Explosives. Very recently a tank car filled with such a soln blew up in a railway yard in Wenatchee, Washington... 

The use of a coned aqueous soln of Monomethylamine Nitrate as a sensitizer for Slurry Explosives was mentioned in the preceding section... 

Another chemical method for measuring freshness, that is more rapid, continuous, and less destructive than other methods is the detection of volatile trimethylamine (TMA), dimethylamine (DMA), monomethylamine (MMA), and ammonia 14,15). Trimethylamine oxide (TMAO) is a decomposition product of proteins as well as present in excretions of fish 16). Spoilage bacteria can reduce TMAO to TMA plus small amounts of DMA, MMA, and ammonia. Tissue TMA levels have be correlated with the pungent odor associated with spoiled seafood as well as total bacterial counts 14). Researchers incorporated a test strip... 

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