Biuret CAS#: 108-19-0; ChemWhat Code: 69475
Identification
| Product Name | Biuret |
| IUPAC Name | carbamoylurea |
| Molecular Structure |  |
| CAS Registry Number | 108-19-0 |
| EINECS Number | 203-559-0 |
| MDL Number | MFCD00007946 |
| Beilstein Registry Number | 1703510 |
| Synonyms | Biuret 108-19-0 Allophanamide Allophanic acid amide IMIDODICARBONIC DIAMIDE Carbamylurea |
| Molecular Formula | C2H5N3O2 |
| Molecular Weight | 103.081 |
| InChI | InChI=1S/C2H5N3O2/c3-1(6)5-2(4)7/h(H5,3,4,5,6,7) |
| InChI Key | OHJMTUPIZMNBFR-UHFFFAOYSA-N |
| Canonical SMILES | C(=O)(N)NC(=O)N |
| Patent Information | ||
| Patent ID | Title | Publication Date |
| US2015/18328 | THERAPEUTICALLY ACTIVE COMPOUNDS AND THEIR METHODS OF USE | 2015 |
| US2010/28280 | PROCESS FOR STRAIGHTENING KERATIN FIBRES WITH A HEATING MEANS AND DENATURING AGENTS | 2010 |
| US2006/127337 | Process for relaxing keratin fibres | 2006 |
Physical Data
| Appearance | White crystalline powder |
| Water Solubility | Slightly soluble(1.87e-02 g/L) |
| Boiling Point | 100 °C |
| Refractive index | 1.4264 (estimate) |
| Water Solubility | 2 g/100 mL (25 ºC) |
| Sensitivity | Hygroscopic |
| Melting Point, °C | Solvent (Melting Point) |
| 98 – 101 | dimethyl sulfoxide, toluene |
| 193 – 194 | ethanol |
| 109 | |
| 190 | |
| 185 – 190 | |
| 198.5 – 199.5 | |
| 201.5 – 202.5 |
| Density, g·cm-3 | Measurement Temperature, °C |
| 1.456 | 19.9 |
| 1.469 | 19.9 |
| 1.467 | 10 |
| Description (Association (MCS)) | Solvent (Association (MCS)) | Partner (Association (MCS)) |
| IR spectrum of the complex | dimethylsulfoxide | methyloxirane, methyldiazabicyclooctane |
| Association with compound | cobalt (3+)-ion |
| Decomposition, °C | Solvent for Crystallization (Decomposition) | Amount (Decomposition), mol |
| 190 | ||
| 111 | water | 0.7 |
Spectra
| Description (NMR Spectroscopy) | Nucleus (NMR Spectroscopy) | Solvents (NMR Spectroscopy) | Temperature (NMR Spectroscopy), °C | Frequency (NMR Spectroscopy), MHz |
| Chemical shifts | 1H | dimethylsulfoxide-d6 | 400 | |
| Chemical shifts | 13C | dimethylsulfoxide-d6 | 100 | |
| Chemical shifts | 15N | dimethylsulfoxide-d6 | 30 | |
| Chemical shifts | 15N | nitromethane |
| Description (IR Spectroscopy) | Solvent (IR Spectroscopy) | Comment (IR Spectroscopy) |
| Bands, Spectrum | potassium bromide | |
| Bands | acetonitrile | |
| Spectrum | gas | 4000 – 500 cm**(-1) |
| Bands | 3440 – 146 cm**(-1) |
| Description (UV/VIS Spectroscopy) | Solvent (UV/VIS Spectroscopy) | Comment (UV/VIS Spectroscopy) |
| Spectrum | aq. NaOH | 210 – 250 nm |
| Spectrum | H2O | 210 – 250 nm, pH 8. |
Route of Synthesis (ROS)
| Conditions | Yield |
| at 140℃ for 5h Experimental Procedure A four necked round bottomed flask was charged with 500 g(8.33 mole) of urea, stirred vigorously, and air was injected to the bottom side of the flask at the rate shown in following table 1.Simultaneously the reaction was carried out during 5 hours with the reaction temperature maintained at 140° C. by heating.After completion of reaction, the composition of the obtained solid was analyzed by using liquid chromatography and the result was disclosed by following Table 1. | A 35 – 61 %Chromat. B 2 – 4 %Chromat. |
| thionyl chloride at 140℃ for 5h Experimental Procedure biuret was prepared by the same method as Example 1 except that the reaction was carried out using 0.05 mole of various catalysts per 1 mole of urea, and the air injection rate is fixed at 2 L/min.After completion of reaction, the composition of the obtained solid is analyzed by using liquid chromatography and the result was disclosed by following Table 4. | A 62 %Chromat. B 3 %Chromat. |
| sodium phosphate at 140℃ for 1h | A 61 %Chromat. B 3 %Chromat. |
| sulfuric acid | A 62 %Chromat. B 4 %Chromat. |
| at 150 – 170℃ for 3h | A 50 – 65 %Chromat. B 3 – 7 %Chromat. |
| at 140℃ under 100 – 380 Torr for 5h | A 50 – 57 %Chromat. B 3 – 4 %Chromat. |
Safety and Hazards
| Pictogram(s) |  |
| Signal | Warning |
| GHS Hazard Statements | H315: Causes skin irritation [Warning Skin corrosion/irritation] H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation] H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Information may vary between notifications depending on impurities, additives, and other factors. |
| Precautionary Statement Codes | P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501 (The corresponding statement to each P-code can be found at the GHS Classification page.) |
Other Data
| Transportation | Not dangerous goods |
| Under the room temperature and away from light | |
| HS Code | 294200 |
| Storage | Under the room temperature and away from light |
| Shelf Life | 2 years |
| Market Price | USD 10/kg |
| Use Pattern |
| Biuret CAS#: 108-19-0 was used as a source of dietary nitrogen in purified diets for steers. |
| bacterial infections |
| Biuret CAS#: 108-19-0 is used as a preservative agent for compositions for udder hygiene |
| Preservative agent for compositions for teat hygiene |
| Preservative agent for compositions for treatment of mastitis |
| Surface coating systems |
| Fertiliser for agricultural compositions |
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Approved Manufacturers | |
| Caming Pharmaceutical Ltd | http://www.caming.com/ |
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