Dicyandiamide

Base Information

  • PRODUCT:Dicyandiamide
  • CAS.:461-58-5
  • MF:C2H4N4
  • Molecular Weight:84.0806
  • Purity:99%

Product Details

CAS: 461-58-5

MF: C2H4N4

Appearance: white powder

Factory supply Dicyandiamide 461-58-5 with sufficient production capacity

  • Molecular Formula:C2H4N4
  • Molecular Weight:84.0806
  • Appearance/Colour:white powder 
  • Vapor Pressure:0.068mmHg at 25°C 
  • Melting Point:208-211 °C(lit.) 
  • Refractive Index:1.6260 (estimate) 
  • Boiling Point:229.8 °C at 760 mmHg 
  • PKA:0.73±0.70(Predicted) 
  • Flash Point:92.8 °C 
  • PSA:85.69000 
  • Density:1.42 g/cm3 
  • LogP:0.14148 

Dicyandiamide(Cas 461-58-5) Usage

Chemical Composition and Structure

Cyanoguanidine is a guanidine derivative in which one of the amino hydrogens of guanidine is substituted by a cyano group (-CN). It is composed of carbon, nitrogen, and hydrogen atoms.

Production Methods

Cyanoguanidine can be produced synthetically by treating cyanamide with a base.
Cyanoguanidine can be produced industrially by reacting a metal oxide with a source of carbon to produce a finely divided metal carbide, which is then immediately reacted with nitrogen gas to form a metal cyanamide. This metal cyanamide can be further decomposed into cyanoguanidine and other compounds by reacting with water. Energy released from the reaction can be utilized, and metal hydroxide can be recovered for recycling.

Application

Dicyanodiammonia, abbreviated as dicy or DCD. It is an organic substance with the chemical formula of c2h4n4. It is a dimer of cyanamide and a cyano derivative of guanidine. Chemical formula c2h4n4. White crystalline powder. Soluble in water, alcohol, ethylene glycol and dimethylformamide, almost insoluble in ether and benzene. Stable when dry. It is a guanidine in which one of the amino hydrogens of guanidine itself is substituted by a cyano group. It is used in the manufacture of fertilizers, pharmaceuticals, explosives, oil well drilling muds, and dyestuffs. It has a role as a curing agent, a flame retardant, a fertilizer, an explosive and a nitrification inhibitor. It is a member of guanidines and a nitrile. The application of nitrification inhibitors has been used as a strategy to promote N utilization efficacy and reduce N2O emissions in paddy Dicyandiamide (DCD) as a widely used nitrification inhibitor inhibits the activity of ammonium-oxidizing bacteria which results in longer ammonium retention and reduces the production of NO2?in soils. DCD efficacy was found to be related to DCD concentration, temperature, moisture, pH, and organic matter content. Studies have shown that leaching DCD from agricultural soils into aquatic ecosystems can strongly change the community composition of benthic stream bacteria and algae and influence stream nutrient cycling stoichiometry. Literature on the mechanisms and benefits of nitrification inhibitors is extensive but there are very few studies focused on the influence of DCD application on other microbes in paddy system.

General Description

Dicyandiamide is commonly used for the curing of epoxy resins. It is a nitrification inhibitor that is said to be capable of reducing nitrate (NO3-) leaching and nitrous oxide (N2O) emissions from grazed pasture soils.

Flammability and Explosibility

Nonflammable

Synthesis

The calcium hydrogen cyanide suspension obtained from the hydrolysis of calcium cyanamide is filtered under reduced pressure to remove the calcium hydroxide filter residue, and then carbon dioxide is introduced into the filtrate to precipitate the calcium in the form of calcium carbonate to obtain the cyanamide solution. It is polymerized under alkaline conditions, then filtered, cooled, crystallized, separated and dried to obtain dimer cyanamide. The temperature at the maximum rate of dicyandiamide formation is related to pH: pH is 9.7 at 50 ℃; PH 9.1 at 80 ℃; The pH is 8.8 at 100 ℃. After controlled polymerization under these conditions, the finished dicyandiamide is obtained by cooling, crystallization, separation and drying. The content of dicyandiamide in industrial products is 99%, and 4239kg of lime nitrogen (more than 21% nitrogen) is consumed per ton of products.

Purification Methods

Recrystallise cyanoguanidine from water or EtOH. [Beilstein 3 IV 160.]

InChI:InChI=1/C2H4N4/c3-1-6-2(4)5/h(H4,4,5,6)/p+1

461-58-5 Relevant articles

Nitrosation of Cyanamide: Preparation and Properties of the Elusive E- and Z-N'-Cyanodiazohydroxides

Guethner, Thomas,Huber, Evi,Sans, Juergen,Thalhammer, Franz

supporting information, (2020/04/29)

Nitrosation of cyanamide leads to unstab...

Novel method for synthesis of sulphaguanidine

Singh, Vikram,Kaushik

experimental part, p. 645 - 648 (2012/05/04)

The microwave-enhanced synthesis of sulp...

Formation of pyrimidin-2-ylcyanamide and 2-aminopyrimidine in the reaction of aniline derivatives with cyanamide and dimethylamino-1-pyridyl-2-propenone

Koroleva,Ignatovich, Zh.V.,Ignatovich,Gusak

scheme or table, p. 1222 - 1226 (2011/12/01)

Substituted o- and p-nitroanilines and m...

Reaction of N-(carbamimidoyl)thiourea with 1-benzoyl-2-phenylacetylene

Glotova,Dvorko,Albanov,Protsuk

, p. 121 - 125 (2007/10/03)

1-Benzoyl-2-phenylacetylene reacted with...

461-58-5 Process route

S-benzyl isothiocarbamide
621-85-2

S-benzyl isothiocarbamide

N-Cyanoguanidine
127099-85-8,780722-26-1,461-58-5

N-Cyanoguanidine

phenylmethanethiol
100-53-8

phenylmethanethiol

Conditions
Conditions Yield
zerfaellt beim Schmelzpunkt;
 
S-benzylisothiourea hydrochloride
538-28-3,860511-29-1

S-benzylisothiourea hydrochloride

N-Cyanoguanidine
127099-85-8,780722-26-1,461-58-5

N-Cyanoguanidine

phenylmethanethiol
100-53-8

phenylmethanethiol

Conditions
Conditions Yield
 
 

461-58-5 Upstream products

  • 88905-87-7
    88905-87-7

    azido-N-cyanoformamidinate

  • 67880-22-2
    67880-22-2

    dicyandiazide

  • 420-04-2
    420-04-2

    CYANAMID

  • 674-81-7
    674-81-7

    nitrosoguanidine

461-58-5 Downstream products

  • 5606-32-6
    5606-32-6

    6-piperidino-[1,3,5]-triazine-2,4-diamine

  • 102-02-3
    102-02-3

    1-phenylbiguanide

  • 4685-18-1
    4685-18-1

    2,4-diamino-6-(2-furyl)-1,3,5-triazine

  • 25007-79-8
    25007-79-8

    2,4-diamino-6-(2′-pyridyl)-1,3,5-triazine

Inquiry
Company:
*Product Name/CAS NO:
*Email:
*Requirements:
*Code: