Cyanamide
From Wikipedia, the free encyclopedia
| Cyanamide | |
|---|---|
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| IUPAC name | Cyanamide, aminomethanenitrile |
| Other names | Amidocyanogen, carbamonitrile, carbimide, carbodiimide, cyanoamine, cyanoazane, N-cyanoamine, cyanogenamide, cyanogen nitride, hydrogen cyanamide |
| Identifiers | |
| CAS number | [420-04-2] |
| PubChem | |
| EINECS number | |
| RTECS number | GS5950000 |
| SMILES | N#CN |
| Properties | |
| Molecular formula | CH2N2 |
| Molar mass | 42.04 g/mol |
| Appearance | Crystalline solid |
| Density | 1.28 g/cm3 at 20 °C |
| Melting point |
42 °C |
| Boiling point |
260 °C (decomp.) |
| Solubility in water | 775 g/l at 15 °C |
| Solubility | Organic solvents |
| Hazards | |
| Main hazards | Toxic (T) |
| NFPA 704 |
 1
4
3
|
| R-phrases | R21 R25 R36/38 R43 |
| S-phrases | (S1/2) S3 S22 S36/37 S45 |
| Flash point | 141 °C |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Cyanamide (CN2H2) is an amide of cyanogen, a white, crystalline compound.
The term can also refer to a salt of this compound, having one or both of the hydrogen atoms replaced by another element or radical, such as in the most common case of calcium cyanamide (CaCN2), a compound used as a fertilizer and as a source of other compounds of nitrogen.
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[edit] Chemistry
Cyanamide can be prepared by hydrolysis of calcium cyanamide in presence of carbon dioxide by Frank-Caro process:
[edit] Uses
Since mid-1960s, there have been developed procedures to produce stabilized for industry use. Cyanamide is used as a plant growth modulator and has many uses in chemical industry.
[edit] Safety risks
Aqueous solutions of cyanamide with high concentration may undergo explosive polymerisation when heated. Stability of its solution can be increased by addition of a dicarboxylic acid such as adipic acid.[1]
