2-Cyanoguanidine is a nitrile derived from

guanidine Guanidine is the compound with the formula HNC(NH2)2. It is a colourless solid that dissolves in polar solvents. It is a strong base that is used in the production of plastics and explosives. It is found in urine predominantly in patients experie ...

. It is a

dimer Dimer may refer to: * Dimer (chemistry), a chemical structure formed from two similar sub-units ** Protein dimer, a protein quaternary structure ** d-dimer * Dimer model, an item in statistical mechanics, based on ''domino tiling'' * Julius Dimer ...

cyanamide Cyanamide is an organic compound with the formula C N2 H2. This white solid is widely used in agriculture and the production of pharmaceuticals and other organic compounds. It is also used as an alcohol-deterrent drug. The molecule features a ...

, from which it can be prepared. 2-Cyanoguanidine is a colourless solid that is soluble in

water Water (chemical formula ) is an Inorganic compound, inorganic, transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living ...

acetone Acetone (2-propanone or dimethyl ketone), is an organic compound with the formula . It is the simplest and smallest ketone (). It is a colorless, highly volatile and flammable liquid with a characteristic pungent odour. Acetone is miscib ...

, and alcohol, but not nonpolar organic solvents.

Production and use

2-Cyanoguanidine is produced by treating

with base. It is produced in soil by decomposition of cyanamide. A variety of useful compounds are produced from 2-cyanoguanidine,

s and

melamine Melamine is an organic compound with the formula C3H6N6. This white solid is a trimer of cyanamide, with a 1,3,5-triazine skeleton. Like cyanamide, it contains 67% nitrogen by mass, and its derivatives have fire retardant properties due t ...

. For example, acetoguanamine and

benzoguanamine Benzoguanamine is an organic compound with the chemical formula (CNH2)2(CC6H5)N3. It is related to melamine but with one amino group replaced by phenyl. Benzoguanamine is used in the manufacturing of melamine resins. Unlike melamine ((CNH2)3N3 ...

are prepared by condensation of cyanoguanidine with the nitrile: :(H₂N)₂C=NCN + RCN → (CNH₂)₂(CR)N₃ Cyanoguanidine is also used as a slow

fertilizer A fertilizer (American English) or fertiliser (British English; see spelling differences) is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from ...

. Formerly, it was used as a fuel in some explosives. It is used in the adhesive industry as a curing agent for epoxy resins.

Chemistry

Two

tautomer Tautomers () are structural isomers (constitutional isomers) of chemical compounds that readily interconvert. The chemical reaction interconverting the two is called tautomerization. This conversion commonly results from the relocation of a hyd ...

ic forms exist, differing in the protonation and bonding of the nitrogen to which the nitrile group is attached. : Dicyandiamide tautomerism

2-Cyanoguanidine can also exist in a

zwitterion In chemistry, a zwitterion ( ; ), also called an inner salt or dipolar ion, is a molecule that contains an equal number of positively- and negatively-charged functional groups. : With amino acids, for example, in solution a chemical equilibrium wil ...

ic form via a formal

acid–base reaction An acid–base reaction is a chemical reaction that occurs between an acid and a base. It can be used to determine pH via titration. Several theoretical frameworks provide alternative conceptions of the reaction mechanisms and their applica ...

among the nitrogens. : Cyanoguanidine zwitterion

Loss of ammonia (NH₃) from the zwitterionic form, followed by deprotonation of the remaining central nitrogen atom, gives the

dicyanamide Dicyanamide, also known as dicyanamine, is an anion having the formula . It contains two cyanide groups bound to a central nitrogen anion. The chemical is formed by decomposition of 2-cyanoguanidine. It is used extensively as a counterion of org ...

anion, (CN)₂sup>−.

References

External links

*
OECD document

{{DEFAULTSORT:Cyanoguanidine, 2- Guanidines Cyanamides Cyanoguanidines