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Dicyandiamide

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Dicyandiamide Basic information
Dicyandiamide Chemical Properties
  • Melting point:208-211 °C(lit.)
  • Boiling point:144.35°C (rough estimate)
  • Density 1.40
  • refractive index 1.6260 (estimate)
  • storage temp. 2-8°C
  • solubility H2O: 0.1 g/mL, clear
  • pka0.73±0.70(Predicted)
  • form Crystalline Powder
  • color White
  • Water Solubility 32 g/L (20 ºC)
  • Merck 14,3092
  • BRN 605637
  • Stability:Stable. Incompatible with strong acids, strong oxidizing agents, strong bases.
  • InChIKeyQGBSISYHAICWAH-UHFFFAOYSA-N
  • CAS DataBase Reference461-58-5(CAS DataBase Reference)
  • NIST Chemistry ReferenceDicyandiamide(461-58-5)
  • EPA Substance Registry SystemDicyanodiamide (461-58-5)
Safety Information
MSDS
Dicyandiamide Usage And Synthesis
  • Chemical Propertieswhite powder
  • UsesDicyandiamide is a guanidine derivative used in the synthesis of barbiturates,it is also used in the plastics industry (manufacture of melamine).
  • UsesIn the plastics industry (manufacture of melamine). In the pharmaceutical industry (barbiturates, guanidine derivatives).
  • Production MethodsDicyanodiamide is manufactured by dimerization of cyanamide in aqueous solution. The 25% cyanamide solution produced is adjusted to pH 8–9 and held at approximately 80C for 2 h to give complete conversion. The hot liquor is filtered and transferred to a vacuum crystallizer, where it is cooled. The crystals or dicyanodiamide are separated in continuous centrifuges and passed to rotary driers. In 1990, the total worldwide production of dicyanodiamide was about 30,000 tons.
  • Purification MethodsRecrystallise cyanoguanidine from water or EtOH. [Beilstein 3 IV 160.]
Dicyandiamide Preparation Products And Raw materials
Dicyandiamide(461-58-5)Related Product Information
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