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thiosemicarbazide Basic information
thiosemicarbazide Chemical Properties
  • Melting point:180-183 °C (dec.)(lit.)
  • Boiling point:208.6±23.0 °C(Predicted)
  • Density 1.221 (estimate)
  • refractive index 1.5800 (estimate)
  • storage temp. Poison room
  • pkapK1:1.5(+1) (25°C,μ=0.1)
  • form Powder
  • color White to light yellow
  • PH5-7 (50g/l, H2O, 20℃)
  • Water Solubility soluble
  • Merck 14,9361
  • BRN 506320
  • Stability:Stable. Incompatible with strong oxidizing agents.
  • CAS DataBase Reference79-19-6(CAS DataBase Reference)
  • NIST Chemistry ReferenceHydrazinecarbothioamide(79-19-6)
  • EPA Substance Registry SystemThiosemicarbazide (79-19-6)
Safety Information
thiosemicarbazide Usage And Synthesis
  • Chemical Propertieswhite crystalline solid
  • Chemical PropertiesThiosemicarbazide is an odorless, white crystalline powder.
  • UsesAs a reagent for detection of metals.
  • General DescriptionN-Aminothiourea is a white crystalline powder and is odorless. N-Aminothiourea is used as a reagent for ketones and certain metals, for photography and as a rodenticide. N-Aminothiourea is also effective for control of bacterial leaf blight of rice. Not a registered pesticide in the U.S. N-Aminothiourea is a chemical intermediate for herbicides and a reagent for detection of metals.
  • Reactivity ProfileIsocyanates and thioisocyanates are incompatible with many classes of compounds, reacting exothermically to release toxic gases. Reactions with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizers, hydrides, phenols, and peroxides can cause vigorous releases of heat. Acids and bases initiate polymerization reactions in these materials. Some isocyanates react with water to form amines and liberate carbon dioxide. Base-catalysed reactions of isocyanates with alcohols should be carried out in inert solvents. Such reactions in the absence of solvents often occur with explosive violence, [Wischmeyer(1969)].
  • Health HazardN-Aminothiourea is highly toxic by ingestion. May induce goiter and cause delayed toxic effects in blood and skin. May be mutagenic in human cells.
  • Fire HazardWhen heated to decomposition, very toxic fumes of sulfur oxides and nitrogen oxides are emitted.
  • Safety ProfilePoison by ingestion, intraperitoneal, and intravenous routes. Questionable carcinogen with experimental tumorigenic data. Human mutation data reported. When heated to decomposition it emits very toxic fumes of NOx and SOx.
  • Potential ExposureThiosemicarbazide is a dithiocarbamide compound is used as an intermedialte for pharmaceuticals and herbicides; as a reagent for ketones and certain metals; in certain photography and dye operations; as a rodenticide. It is also effective for control of bacterial leaf blight of rice.
  • ShippingUN2771 Thiosemicarbazide, pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.
  • Purification MethodsCrystallise thiosemicarbazide from H2O (solubility is 20.3% w/w at 80o). The hydrochloride has m 190-191o(dec, 184o also reported). It forms salts with heavy metals. [Beilstein 3 H 195, 3 I 79, 3 II 134, 3 III 315, 3 IV 374.]
  • IncompatibilitiesIncompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.) and strong reducing agents; contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. May react with nitrates.
thiosemicarbazide Preparation Products And Raw materials
thiosemicarbazide(79-19-6)Related Product Information
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