Hexamethylenetetramine, formation nitration

Acid—Base Chemistry. Acetic acid dissociates in water, pK = 4.76 at 25°C. It is a mild acid which can be used for analysis of bases too weak to detect in water (26). It readily neutralizes the ordinary hydroxides of the alkaU metals and the alkaline earths to form the corresponding acetates. When the cmde material pyroligneous acid is neutralized with limestone or magnesia the commercial acetate of lime or acetate of magnesia is obtained (7). Acetic acid accepts protons only from the strongest acids such as nitric acid and sulfuric acid. Other acids exhibit very powerful, superacid properties in acetic acid solutions and are thus useful catalysts for esterifications of olefins and alcohols (27). Nitrations conducted in acetic acid solvent are effected because of the formation of the nitronium ion, NO Hexamethylenetetramine [100-97-0] may be nitrated in acetic acid solvent to yield the explosive cycl o trim ethyl en etrin itram in e [121 -82-4] also known as cyclonit or RDX. 

Tracer Studies on the Nitro lysis of Hexamine to RDX and HMX. The formation of RDX and/or HMX molecules from the nitration or nitrolysis of Hexamethylenetetramine (Hexamine) is a complex process and has been postulated to take place via two separate paths. One involves the selective cleavage of the Hexamine molecule to the appropriate cyclic nitramine (RDX, HMX or both) depending on the specific... 

Compound Name Ammonium Hydroxide Hexamethylenetetramine Ammonium Acetate Ammonium Bifluoride Ammonium Sulfamate Ammonium Sulfamate Ammonium Benzoate Ammonium Bicarbonate Ammonium Dichromate Ammonium Bifluoride Ammonium Carbonate Ammonium Chloride Ammonium Citrate Ammonium Citrate Ammonium Pentaborate Ammonium Dichromate Nickel Ammonium Sulfate Ferric Ammonium Citrate Ferric Ammonium Oxalate Ferrous Ammonium Sulfate Ammonium Fluoride Ammonium Silicofluoride Ammonium Formate Ammonium Gluconate Ammonium Bicarbonate Ammonium Bifluoride Ammonium Sulfide Ammonium Hydroxide Ammonium Thiosulfate Ammonium Thiosulfate Ammonium Iodide Ferrous Ammonium Sulfate Ammonium Lactate Ammonium Lactate Ammonium Lauryl Sulfate Ammonium Molybdate Ammonium Chloride Nickel Ammonium Sulfate Ammonium Nitrate Ammonium Nitrate-Urea Solution Ammonium Oleate... 

Acetic Anhydride, Hexamethylenetetramine Acetate, and Nitric Acid. Explosive mixture due to formation of acetyl nitrate.4... 

Naphthaldehyde has been prepared from /3-chloro- or bromomethylnaphthalene by use of hexamethylenetetramine, or by oxidation with lead nitrate from /3-naphthoic acid by distillation with calcium formate, or by reduction with sodium amalgam in boric acid solution from /3-naphthylcarbinol by oxidation with chromic acid and from (3-naphthylglyoxylic acid by saponification, heating with aniline, and hydrolysis of the anil." It has been prepared from j8-naphthylmagnesium bromide and ethoxymethyleneaniline or orthoformic ester, ... 

The earlier process for making RDX consisted of reacting hexamine (hexamethylenetetramine) or its dinitrate salt with 98-100 per cent nitric acid. The yields of this method are not good because the formation of RDX is accompanied by the formation of formaldehyde, which is oxidized by the nitric acid. Greatly improved yields (70-80 per cent) can be obtained by means of the Bachman process, which employs hexamine, 98 per cent nitric acid, ammonium nitrate, and acetic anhydride. In the Bachman process a by-product having the structure I is also formed in yields up to 10 per cent. The mechanism of these reactions is not thoroughly understood. 

Bimetallic Co(Ni)-Mo carbides can also be synthesized due to the decomposition of precursors (metal-hexamethylenetetramine complexes) in an inert atmosphere [9, 10], This is a simple one-stage method of the formation of double C03M03C and CogMogC carbides [11], In [12], the Co Moi j oxides prepared from aqueous solutions of cobalt nitrate and ammonium heptamolybdate were carbonized in a flow of pure methane and hydrogen (20% CH4/H2 mixture) to form double carbides. 

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