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Encyclopedia > Cyanamide
Cyanamide
IUPAC name Cyanamide
Other names Amidocyanogen, carbamonitrile, carbimide, carbodiimide, cyanoamine, cyanoazane, N-cyanoamine, cyanogenamide, cyanogen nitride, hydrogen cyanamide
Identifiers
CAS number 420-04-2
EINECS number 206-992-3
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 Image File history File links No higher resolution available. ... Image File history File links Size of this preview: 800 × 388 pixelsFull resolution (1100 × 533 pixel, file size: 91 KB, MIME type: image/png) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... IUPAC nomenclature is a system of naming chemical compounds and of describing the science of chemistry in general. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... The EINECS number (for European Inventory of Existing Chemical Substances) is a registry number given to each chemical substance commercially available in the European Union between 1 January 1971 and 18 September 1981. ... RTECS, also known as Registry of Toxic Effects of Chemical Substances, is a database of toxicity information compiled from the open scientific literature that is available for charge. ... The simplified molecular input line entry specification or SMILES is a specification for unambiguously describing the structure of chemical molecules using short ASCII strings. ... This article or section does not cite any references or sources. ... Molar mass is the mass of one mole of a chemical element or chemical compound. ... In physics, density is mass m per unit volume V. For the common case of a homogeneous substance, it is expressed as: where, in SI units: ρ (rho) is the density of the substance, measured in kg·m-3 m is the mass of the substance, measured in kg V is... The melting point of a crystalline solid is the temperature at which it changes state from solid to liquid. ...

Boiling point

260 °C (decomp.)
83 °C at 6.7 Pa
140 °C at 2.5 kPa
Italic text This article is about the boiling point of liquids. ...

Solubility in water 775 g/l at 15 °C
Solubility Organic solvents
Hazards
Main hazards Toxic (T)
NFPA 704

Solubility refers to the ability for a given substance, the solute, to dissolve in a solvent. ... Impact from a water drop causes an upward rebound jet surrounded by circular capillary waves. ... Solubility refers to the ability for a given substance, the solute, to dissolve in a solvent. ... The examples and perspective in this article or section may not represent a worldwide view. ... NFPA 704 is a standard maintained by the U.S. National Fire Protection Association. ... Image File history File links NFPA_704. ...

1
4
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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

Cyanamide (CN2H2) is an amide of cyanogen, a white, crystalline compound. R-phrases are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations. ... S-phrases are defined in Annex IV of European Union Directive 67/548/EEC: Safety advice concerning dangerous substances and preparations. ... The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture with air. ... In chemistry, the standard state of a material is its state at 1 bar (100 kilopascals) and 25 degrees Celsius (298. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Standard atomic weight 12. ... General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless gas Standard atomic weight 14. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Amide functional group Amides possess a conjugated system spread over the O, C and N atoms, consisting of molecular orbitals occupied by delocalized electrons. ... Cyanogen is a chemical compound (CN)2. ...


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. CaCN2 Calcium compound. ... Spreading manure, an organic fertilizer Fertilizers (also spelled fertilisers) are compounds given to plants to promote growth; they are usually applied either via the soil, for uptake by plant roots, or by foliar feeding, for uptake through leaves. ...

Contents

Chemistry

Cyanamide can be prepared by hydrolysis of calcium cyanamide in presence of carbon dioxide by Frank-Caro process: In order to meet Wikipedias quality standards, this article requires cleanup. ... This article does not cite any references or sources. ...

mathrm{CaCN_2 + H_2O + CO_2 rightarrow H_2NCN + CaCO_3}

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. The 1960s decade refers to the years from January 1, 1960 to December 31, 1969, inclusive. ...


Safety risks

Aqueous solutions of cyanamide with high concentration may undergo explosive polymerisation when heated. Stability of its solution can be risen by addition of a dicarboxylic acid such as adipic acid.[1] Polymerization is the formation of long, repeating organic polymer chains. ... Dicarboxylic acids are organic compounds that are substituted with two carboxylic acid functional groups. ... Adipic acid is the common name of 1,6-hexanedioic acid, a chemical compound of the class of carboxylic acids. ...


References

  1. ^ Cyanamide aqueous solution

External links


  Results from FactBites:
 
United States Patent Application: 0040016275 (18388 words)
However, it should be recognized that the terms calcium cyanamide and commercial calcium cyanamide encompass calcium cyanamide materials where additional components of commercial calcium cyanamide such as carbon, calcium oxide, dicyandiamide and calcium carbide are absent or are present in amounts different from typical commercial calcium cyanamide.
According to the disclosure, calcium oxide in commercial calcium cyanamide is not an undesirable by-product; rather, its presence in commercial calcium cyanamide is exploited to raise pH and stabilize bioactive acid cyanamide ions that form as calcium cyanamide dissolves.
In the case of heterogeneous compositions that comprise a calcium cyanamide core and a urea coating, it is plausible that acetylene generated during manufacture purges atmospheric gases including carbon dioxide from the near the core.
  More results at FactBites »


 
 

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