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N-ACETYLTHIOUREA Basic information
N-ACETYLTHIOUREA Chemical Properties
  • Melting point:165-169 °C(lit.)
  • Density 1.240 (estimate)
  • refractive index 1.7000 (estimate)
  • storage temp. Store below +30°C.
  • solubility 12.8g/l
  • pka11.24±0.70(Predicted)
  • form Crystalline Powder
  • color Pale cream
  • PH6.0 (173g/l, H2O, 20℃)
  • BRN 969960
  • CAS DataBase Reference591-08-2(CAS DataBase Reference)
  • EPA Substance Registry System1-Acetyl-2-thiourea (591-08-2)
Safety Information
  • Hazard Codes T
  • Risk Statements 25
  • Safety Statements 36/37/39-45
  • RIDADR UN 2811 6.1/PG 2
  • WGK Germany 3
  • RTECS YR7700000
  • Hazard Note Highly Toxic
  • TSCA Yes
  • HazardClass 6.1
  • PackingGroup II
N-ACETYLTHIOUREA Usage And Synthesis
  • Chemical Propertieswhite crystalline powder
  • Chemical Properties1-Acetyl-2-thiourea is a white crystalline solid; forming needles
  • General DescriptionWhite crystalline solid. Noncombustible, but decomposes with heating.
  • Air & Water ReactionsSlightly soluble in water, soluble in hot water. Hydrolysis occurs rapidly with strong acid/base media.
  • Reactivity ProfileN-ACETYLTHIOUREA is incompatible with strong oxidizing agents, strong acids and strong bases. Decomposes when heated to give toxic oxides of sulfur and nitrogen.
  • Health HazardTOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
  • Fire HazardNon-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
  • Potential ExposureStudied as possible rodenticide; used in organic synthesis.
  • ShippingUN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.
  • Purification MethodsRecrystallise the thiourea from AcOH; the solid is washed with Et2O and dried in air then at 100o. [Zahradnik Collect Czech Chem Commun 24 3678 1959, Beilstein 3 IV 354.]
  • IncompatibilitiesIncompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides.
  • Waste DisposalConsult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.
N-ACETYLTHIOUREA Preparation Products And Raw materials
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