title: Phenicarbazide
text: # Phenicarbazide
  
  Phenicarbazide is a semicarbazide and an antipyretic substance. It is carcinogenic in mice.
  
  ## Preparation
  
  Phenicarbazide can be obtained by mixing phenylhydrazine with acetic acid in aqueous solution with the addition of potassium cyanide. It is also obtained from the reaction of phenylhydrazine with urea.
  
  ## Properties
  
  Phenicarbazide is a flammable, hard to ignite, crystalline, beige solid that is practically insoluble in water. It decomposes on heating.
  
  ## Uses
  
  Phenicarbazide is an intermediate in the syntheses of a series of chemical compounds by cyclocondensation reactions. It was investigated as an analgesic and antipyretic in the 1970s and was used in combination preparations.
  
  