Product Name

  • Name

    Semicarbazide

  • EINECS 200-339-6
  • CAS No. 57-56-7
  • Article Data110
  • CAS DataBase
  • Density 1.286±0.06 g/cm3(Predicted)
  • Solubility
  • Melting Point 175-185oC /decomposes/
  • Formula CH5 N3 O
  • Boiling Point 133.71°C (rough estimate)
  • Molecular Weight 75.0702
  • Flash Point
  • Transport Information
  • Appearance
  • Safety A poison by ingestion, intraperitoneal, subcutaneous, and intravenous routes. Human systemic effects by intravenous route: convulsions. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also HYDRAZINE.
  • Risk Codes 22
  • Molecular Structure Molecular Structure of 57-56-7 (Semicarbazide)
  • Hazard Symbols Xn
  • Synonyms Isosemicarbazide(8CI); Aminourea; Carbamic acid, hydrazide; Carbamylhydrazine; Carbazamide;Carbazimidic acid; Hydrazine, (aminocarbonyl)-; Semicarbazide; Urea, amino-
  • PSA 81.14000
  • LogP 0.31990

Semicarbazide Chemical Properties

Chemistry informtion about Semicarbazide (57-56-7) is:
IUPAC Name: Aminourea
Synonyms: Aminomocovina ; Amino-Ure ; Carbamic Acid, Hydrazide ; Carbamicacid,Hydrazide ; Carbamoyl-Hydrazin ; Carbamylhydrazine ; Carbazamide ; Hydrazine, Carbamoyl-
MF: CH5N3O
MW: 75.07
EINECS: 200-339-6 
Density: 1.286 g/cm3
Flash Point: 66.5 °C
Boiling Point: 186.3 °C at 760 mmHg
Vapour Pressure: 0.187 mmHg at 25°C
Enthalpy of Vaporization: 49.18 kJ/mol
Following is the molecular structure of  Semicarbazide (57-56-7) is:

Semicarbazide Uses

 Semicarbazide (57-56-7) is used as a detection reagent on thin layer chromatography (TLC). It stains α-keto acids on the TLC plate, which must then be viewed under a UV light to see the results.

Semicarbazide Production

 Raw materials: Urea → Hydrazine Sulfate → Sodium Cyanate → Semicarbazide Hydrochloride
Preparation Products:  Hydrocortisone → 4'-Methylacetophenone → Semicarbazide Hydrochloride → Civetone → 2,6-Dihydroxypurine → Nitrofurantoin → Menthone → 3-Methylcyclopentadecanone → Mitoguazone → 4-Phenylurazole → Acetone Semicarbazone

Semicarbazide Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
man TDLo intravenous 40mg/kg (40mg/kg) Behavioral: convulsions or effect on seizure threshold Journal of Pharmacology and Experimental Therapeutics. Vol. 122, Pg. 110, 1958.
mouse LD50 intraperitoneal 123mg/kg (123mg/kg) Behavioral: convulsions or effect on seizure threshold Journal of Pharmacology and Experimental Therapeutics. Vol. 122, Pg. 110, 1958.
mouse LD50 intravenous 126mg/kg (126mg/kg) Behavioral: convulsions or effect on seizure threshold Journal of Pharmacology and Experimental Therapeutics. Vol. 122, Pg. 110, 1958.
mouse LD50 oral 176mg/kg (176mg/kg)
Behavioral: convulsions or effect on seizure threshold
Journal of Pharmacology and Experimental Therapeutics. Vol. 122, Pg. 110, 1958.
mouse LD50 subcutaneous 105mg/kg (105mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 119, Pg. 444, 1957.
rat LD50 intraperitoneal 140mg/kg (140mg/kg)   Naunyn-Schmiedebergs Archiv fuer Pharmakologie und Experimentelle Pathologie. Vol. 257, Pg. 296, 1967.
rat LD50 subcutaneous 140mg/kg (140mg/kg)    

Semicarbazide Consensus Reports

Reported in EPA TSCA Inventory.

Semicarbazide Safety Profile

A poison by ingestion, intraperitoneal, subcutaneous, and intravenous routes. Human systemic effects by intravenous route: convulsions. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also HYDRAZINE.
Hazard Codes:
Xn: Harmful
Risk Statements:
R22: Harmful if swallowed.
Safety Statements:
S22: Do not breathe dust. 
WGK Germany: 3

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