156-62-7 lime nitrogen

Also known as nitrolim and lime nitrogen. The fresh product contains approximately 55 per cent, of calcium cyanamide, 20 p>er cent, of lime, 12 per cent, of graphite and small amounts of other impurities. It should be protected from moisture when stored in order to prevent slow polymerisation to dicyano-diamide. 

Calcium cyanamide (lime nitrogen) has been used as a fertiliser (6). It hydrolyses ia moist soil to produce ammonia ... 

Formula CaCN2 MW 80.11 cyanamide ion is linear and structurally similar to CO2 Structure N = CN = Ca Synonyms calcium carbimide lime nitrogen nitrolime... 

The resulting dark-colored mixture of calcium cyanamide and carbon is known as lime nitrogen (Kalkstickstoff) and is used in fertilizers. If steam is passed through it, it yields ammonia. 

The preparation of diallyl cyanamide by the above method has only recently been described in the literature.1 However, other dialkyl cyanamides have been prepared by the following methods the action of chlorocyanogen or bromocyanogen on dialkyl amines 2 the reaction of dialkylchloroamines with potassium cyanide 3 the action of bromine on a mixture of dialkyl amines and potassium cyanide 4 the action of alkyl halides on disilver cyanamide5 and on disodium cyanamide.6 Dimethyl cyanamide has also been prepared by the action of dimethyl sulfate on lime nitrogen 7 and on cyanamide. 8... 

The lime nitrogen used in this preparation should be the crude, untreated, product sold as fertilizer under the name Cyanamid. It contains approximately 55 per cent calcium cyanamide, 20 per cent calcium oxide, 12 per cent graphite, and small amounts of various impurities. Lime nitrogen should be protected from moisture when stored, in order to prevent slow polymerization to dicyanodiamide. It is advisable to use a fresh supply of lime nitrogen for this synthesis. 

Lauryl alcohol, I, 7 Lauryl bromide, I, 7 Lime nitrogen, V, 45, 46... 

LIME NITROGEN (156-62-7) Combustible solid. Dust or powder forms explosive mixture with air. Contact with water, steam causes decomposition, forming acetylene gas, ammonia, and calcium hydrogen cyanamide. Violent reaction with strong oxidizers, fluorine, strong acids. Incompatible with barium peroxide, boric acid, dry hydrogen, hydrogen peroxide. Contact with all solvents tested also causes decomposition. 

SYNONYMS AIzodef, calcium carbimide, calcium salt, lime nitrogen, cyanimide, nitro-... 

Synonyms/Trade Names Calcium carbimide, Cyanamide, Lime nitrogen, Nitrogen lime [Note Cyanamide is also a synonym for Hydrogen cyanamide, NH2CN ]... 

Niirollm is the trade name for the material sold in England for agricultural purposes. It is a lime-nitrogen to which has been added just enough water to destroy the carbide. Practically all free lime is present as calcium oxide. 

Through a process of autoclaving evanamide may be converted into ammonia. The cyanamide, or lime nitrogen, is introduced into an autoclave with water in the approximate proportions of four parts of cyanamide by weight to five parts of water plus a small amount of strong alkaline liquor, caustic soda, to aid the chemical reaction. The mixture is then treated with steam, and ammonia gas is released according to the equation... 

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