Thiourea

Thiourea is an organosulfur compound with the formula SC(NH2)2. It is structurally similar to urea, except that the oxygen atom is replaced by a sulfur atom, but the properties of urea and thiourea differ significantly. Thiourea is a reagent in organic synthesis.

Properties

Thiourea is a white crystalline solid that is soluble in water and ethanol. It has a melting point of 182 degrees Celsius and a boiling point of 126 degrees Celsius. It is stable under normal temperatures and pressures, but it can decompose when heated.

Production

Thiourea can be produced from ammonium thiocyanate. The reaction involves heating the ammonium thiocyanate, which results in the thiourea product. This is a dangerous process, as the reaction can be explosive.

Uses

Thiourea is used in various applications. It is used as a fixative in photography, as a reagent in organic synthesis, and as a component in the production of flame retardant resins. It is also used in the textile industry for dyeing processes, and in the rubber industry for the vulcanization of rubber.

Health effects

Exposure to thiourea can cause irritation to the eyes, skin, and respiratory tract. It can also cause nausea, headache, and dizziness. Long-term exposure can lead to more serious health effects, such as damage to the liver and kidneys.

See also

• Urea
• Organosulfur compounds
• Ammonium thiocyanate

• 
  Thiourea tautomers
• 
  Diol
• 
  Reduction cleavage
• 
  Pyrimidine
• 
  Aminothiazole