- InChI
- InChI=1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)
- InChI Key
- XSQUKJJJFZCRTK-UHFFFAOYSA-N
- Formula
- CH4N2O
- SMILES
- NC(N)=O
- Molecular Weight1
- 60.06
- CAS
- 57-13-6
- Other Names
-
- (NH2)2CO
- Alphadrate
- Aquacare
- Aquadrate
- B-I-K
- Basodexan
- Benural 70
- Bubber shet
- Calmurid
- Carbaderm
- Carbamide
- Carbamimidic acid
- Carbonyl Diamine
- Carbonyldiamide
- Elaqua xx
- Harnstoff
- Hyanit
- Isourea
- Keratinamin
- Mocovina
- NCI-C02119
- NSC 34375
- Nutraplus
- Onychomal
- Pastaron
- Prespersion, 75 urea
- Pseudourea
- Supercel 3000
- UR
- Ultra Mide
- Urea-13C
- Ureaphil
- Ureophil
- Urepearl
- Urevert
- Uroderm
- Varioform II
- carbamoylamine
- PAff : Proton affinity (kJ/mol).
- BasG : Gas basicity (kJ/mol).
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- Cp,solid : Solid phase heat capacity (J/mol×K).
- SProt : Protonation entropy at 298K (J/mol×K).
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔfH°solid : Solid phase enthalpy of formation at standard conditions (kJ/mol).
- ΔfusH° : Enthalpy of fusion at standard conditions (kJ/mol).
- ΔfusH : Enthalpy of fusion at a given temperature (kJ/mol).
- ΔsubH° : Enthalpy of sublimation at standard conditions (kJ/mol).
- ΔsubH : Enthalpy of sublimation at a given temperature (kJ/mol).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- IE : Ionization energy (eV).
- log10WS : Log10 of Water solubility in mol/l.
- logPoct/wat : Octanol/Water partition coefficient.
- McVol : McGowan's characteristic volume (ml/mol).
- Pc : Critical Pressure (kPa).
- Psub : Sublimation pressure (kPa).
- Pvap : Vapor pressure (kPa).
- ΔfusS : Entropy of fusion at a given temperature (J/mol×K).
- S°solid,1 bar : Solid phase molar entropy at standard conditions (J/mol×K).
- Tboil : Normal Boiling Point Temperature (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (K).
- Ttriple : Triple Point Temperature (K).
- Vc : Critical Volume (m3/kmol).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| PAff | [868.40; 873.50] | kJ/mol |
|
| PAff | 868.40 ± 2.50 | kJ/mol | NIST |
| PAff | 873.50 ± 5.00 | kJ/mol | NIST |
| PAff | 873.50 ± 5.00 | kJ/mol | NIST |
| BasG | [838.70; 846.10] | kJ/mol |
|
| BasG | 838.70 ± 3.00 | kJ/mol | NIST |
| BasG | 846.10 ± 5.00 | kJ/mol | NIST |
| BasG | 841.60 ± 5.00 | kJ/mol | NIST |
| SProt | [-1.90; 9.40] | J/mol×K |
|
| SProt | 9.40 | J/mol×K | NIST |
| SProt | -1.90 | J/mol×K | NIST |
| ΔfG° | -38.48 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | -235.50 ± 1.20 | kJ/mol | NIST |
| ΔfH°solid | [-333.39; -320.20] | kJ/mol |
|
| ΔfH°solid | -333.11 ± 0.69 | kJ/mol | NIST |
| ΔfH°solid | -320.20 ± 2.00 | kJ/mol | NIST |
| ΔfH°solid | -333.39 ± 0.17 | kJ/mol | NIST |
| ΔfH°solid | -333.30 ± 0.20 | kJ/mol | NIST |
| ΔfH°solid | -323.60 | kJ/mol | NIST |
| ΔfusH° | 10.34 | kJ/mol | Joback Calculated Property |
| ΔsubH° | [87.65; 98.60] | kJ/mol |
|
| ΔsubH° | 95.50 ± 0.30 | kJ/mol | NIST |
| ΔsubH° | 98.60 | kJ/mol | NIST |
| ΔsubH° | 87.65 ± 0.88 | kJ/mol | NIST |
| ΔvapH° | 45.85 | kJ/mol | Joback Calculated Property |
| IE | [9.70; 10.33] | eV |
|
| IE | 9.70 | eV | NIST |
| IE | 10.27 ± 0.05 | eV | NIST |
| IE | 9.80 | eV | NIST |
| IE | 10.28 | eV | NIST |
| IE | 10.33 | eV | NIST |
| IE | 10.15 | eV | NIST |
| log10WS | [0.96; 0.96] |
|
|
| log10WS | 0.96 | Aq. Sol... | |
| log10WS | 0.96 | Estimat... | |
| logPoct/wat | -0.976 | Crippen Calculated Property | |
| McVol | 46.480 | ml/mol | McGowan Calculated Property |
| Pc | 7735.33 | kPa | Joback Calculated Property |
| S°solid,1 bar | [104.26; 172.00] | J/mol×K |
|
| S°solid,1 bar | 104.26 | J/mol×K | NIST |
| S°solid,1 bar | 104.93 | J/mol×K | NIST |
| S°solid,1 bar | 105.40 | J/mol×K | NIST |
| S°solid,1 bar | 172.00 | J/mol×K | NIST |
| Tboil | 421.21 | K | Joback Calculated Property |
| Tc | 638.13 | K | Joback Calculated Property |
| Tfus | [405.15; 410.00] | K |
|
| Tfus | 407.00 | K | Aq. Sol... |
| Tfus | 406.50 ± 0.50 | K | NIST |
| Tfus | 406.00 ± 3.00 | K | NIST |
| Tfus | 406.20 ± 0.10 | K | NIST |
| Tfus | 405.40 ± 0.80 | K | NIST |
| Tfus | 405.80 ± 0.50 | K | NIST |
| Tfus | 405.15 ± 1.50 | K | NIST |
| Tfus | 406.15 ± 1.50 | K | NIST |
| Tfus | Outlier 410.00 ± 1.50 | K | NIST |
| Ttriple | [405.80; 408.00] | K |
|
| Ttriple | 407.90 ± 0.20 | K | NIST |
| Ttriple | 408.00 ± 0.00 | K | NIST |
| Ttriple | 405.80 ± 0.10 | K | NIST |
| Ttriple | 405.80 ± 0.20 | K | NIST |
| Vc | 0.155 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [87.80; 109.86] | J/mol×K | [421.21; 638.13] |
|
|
T(K) Ideal gas heat capacity (J/mol×K) 90 95 100 105 110 450 500 550 600 | ||||
| Cp,gas | 87.80 | J/mol×K | 421.21 | Joback Calculated Property |
| Cp,gas | 91.98 | J/mol×K | 457.36 | Joback Calculated Property |
| Cp,gas | 95.96 | J/mol×K | 493.52 | Joback Calculated Property |
| Cp,gas | 99.73 | J/mol×K | 529.67 | Joback Calculated Property |
| Cp,gas | 103.30 | J/mol×K | 565.82 | Joback Calculated Property |
| Cp,gas | 106.68 | J/mol×K | 601.98 | Joback Calculated Property |
| Cp,gas | 109.86 | J/mol×K | 638.13 | Joback Calculated Property |
| Cp,solid | [68.60; 115.50] | J/mol×K | [293.00; 304.70] |
|
|
T(K) Solid phase heat capacity (J/mol×K) 70 80 90 100 110 120 295 300 | ||||
| Cp,solid | 68.60 | J/mol×K | 293.00 | NIST |
| Cp,solid | 93.64 | J/mol×K | 298.00 | NIST |
| Cp,solid | 115.50 | J/mol×K | 298.00 | NIST |
| Cp,solid | 93.08 | J/mol×K | 298.15 | NIST |
| Cp,solid | 90.00 | J/mol×K | 298.15 | NIST |
| Cp,solid | 93.14 | J/mol×K | 298.15 | NIST |
| Cp,solid | 92.79 | J/mol×K | 298.15 | NIST |
| Cp,solid | 94.00 | J/mol×K | 304.70 | NIST |
| ΔfusH | [12.93; 15.03] | kJ/mol | [405.20; 408.10] |
|
|
T(K) Enthalpy of fusion at a given temperature (kJ/mol) 13 13.5 14 14.5 15 406 407 408 | ||||
| ΔfusH | 13.60 | kJ/mol | 405.20 | NIST |
| ΔfusH | 13.90 | kJ/mol | 405.80 | NIST |
| ΔfusH | 13.61 | kJ/mol | 405.80 | NIST |
| ΔfusH | 13.90 | kJ/mol | 405.80 | NIST |
| ΔfusH | 14.50 | kJ/mol | 406.00 | NIST |
| ΔfusH | 14.79 | kJ/mol | 406.50 | NIST |
| ΔfusH | 14.60 | kJ/mol | 406.70 | NIST |
| ΔfusH | 14.60 | kJ/mol | 407.20 | NIST |
| ΔfusH | 15.03 | kJ/mol | 407.90 | NIST |
| ΔfusH | 12.93 | kJ/mol | 408.10 | NIST |
| ΔsubH | [87.70; 97.60] | kJ/mol | [350.00; 381.00] |
|
|
T(K) Enthalpy of sublimation at a given temperature (kJ/mol) 88 90 92 94 96 98 350 360 370 380 | ||||
| ΔsubH | 96.90 | kJ/mol | 350.00 | NIST |
| ΔsubH | 94.60 ± 0.50 | kJ/mol | 350.00 | NIST |
| ΔsubH | 97.60 ± 1.00 | kJ/mol | 354.00 | NIST |
| ΔsubH | 87.70 | kJ/mol | 356.50 | NIST |
| ΔsubH | 87.90 ± 2.10 | kJ/mol | 356.50 | NIST |
| ΔsubH | 88.20 | kJ/mol | 357.00 | NIST |
| ΔsubH | 95.40 | kJ/mol | 361.00 | NIST |
| ΔsubH | 94.60 ± 2.20 | kJ/mol | 366.00 | NIST |
| ΔsubH | 95.10 ± 2.20 | kJ/mol | 366.00 | NIST |
| ΔsubH | 90.90 | kJ/mol | 381.00 | NIST |
| Psub | [6.40e-04; 0.02] | kPa | [358.30; 402.00] |
|
|
T(K) Sublimation pressure (kPa) 0 5.00e-3 0.01 0.02 0.02 360 380 400 | ||||
| Psub | 6.40e-04 | kPa | 358.30 | Measure... |
| Psub | 1.00e-03 | kPa | 363.40 | Measure... |
| Psub | 1.51e-03 | kPa | 368.40 | Measure... |
| Psub | 1.89e-03 | kPa | 371.20 | Measure... |
| Psub | 2.46e-03 | kPa | 374.30 | Measure... |
| Psub | 2.96e-03 | kPa | 376.50 | Measure... |
| Psub | 3.80e-03 | kPa | 379.50 | Measure... |
| Psub | 6.27e-03 | kPa | 386.30 | Measure... |
| Psub | 0.01 | kPa | 393.20 | Measure... |
| Psub | 0.02 | kPa | 399.00 | Measure... |
| Psub | 0.02 | kPa | 402.00 | Measure... |
| ΔfusS | [33.54; 36.40] | J/mol×K | [405.80; 406.50] |
|
| ΔfusS | 34.25 | J/mol×K | 405.80 | NIST |
| ΔfusS | 33.54 | J/mol×K | 405.80 | NIST |
| ΔfusS | 35.70 | J/mol×K | 406.00 | NIST |
| ΔfusS | 36.40 | J/mol×K | 406.50 | NIST |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [1.33e-04; 1.33e-03] | kPa | [340.65; 368.05] |
The Yaw...
|
| Equation | ln(Pvp) = A + B/(T + C) | |||
| Coefficient A | 2.20584e+01 | |||
| Coefficient B | -1.05730e+04 | |||
| Coefficient C | 6.10000e-01 | |||
| Temperature range, min. | 340.65 | |||
| Temperature range, max. | 368.05 | |||
|
T(K) Vapor pressure (kPa) 2.00e-4 4.00e-4 6.00e-4 8.00e-4 1.00e-3 1.20e-3 1.40e-3 340 350 360 | ||||
| Pvap | 1.33e-04 | kPa | 340.65 | Calculated Property |
| Pvap | 1.75e-04 | kPa | 343.69 | Calculated Property |
| Pvap | 2.29e-04 | kPa | 346.74 | Calculated Property |
| Pvap | 2.99e-04 | kPa | 349.78 | Calculated Property |
| Pvap | 3.87e-04 | kPa | 352.83 | Calculated Property |
| Pvap | 5.00e-04 | kPa | 355.87 | Calculated Property |
| Pvap | 6.43e-04 | kPa | 358.92 | Calculated Property |
| Pvap | 8.23e-04 | kPa | 361.96 | Calculated Property |
| Pvap | 1.05e-03 | kPa | 365.01 | Calculated Property |
| Pvap | 1.33e-03 | kPa | 368.05 | Calculated Property |
Similar Compounds
Find more compounds similar to Urea.
Mixtures
- Choline chloride + Urea + Water
- Choline chloride + Ethanol + Urea
- Choline chloride + Urea
- Urea + Water
- sodium chloride + Urea + Water
- Choline chloride + Urea + Methyl Alcohol
- 1,2-Ethanediol + Urea
- Ammonia + Choline chloride + Urea
- Urea + Formamide
- Glucose + Urea + Water
- D-Fructose + Urea + Water
- Sucrose + Urea + Water
- Formamide, N,N-dimethyl- + Urea
- Formamide, N,N-dimethyl- + Urea + Water
- 1,2-Ethanediol + Urea + Sulfur dioxide
- Carbon dioxide + Urea
- Ethanol + Urea
- Carbon dioxide + Ethanol + Urea
- Sodium sulfate + Urea + Water
- Urea + Ethanol, 2,2'-oxybis-
Sources
- Crippen Method
- Measurement and modelling of urea solubility in supercritical CO2 and CO2 + ethanol mixtures
- Thermodynamic properties of aqueous salt containing urea solutions
- Acoustic investigation of choline chloride based ionic liquids analogues
- Phase diagrams of Na2SO4-MgSO4-CO(NH2)2-H2O system at 60 C and their application
- Determination and modeling of binary and ternary solid-liquid phase equilibrium for the systems formed by adipic acid, urea and diethylene glycol
- Formation of type III deep eutectic solvents and effect of water on their intermolecular interactions
- Separation of azeotropic mixtures (ethanol and water) enhanced by deep eutectic solvents
- Solid-liquid equilibria of the CO(NH2)2-MgSO4-(NH4)2SO4-H2O system at 0 C and 25 C
- Thermodynamics of phase transfer for polar molecules from alkanes to deep eutectic solvents
- Experimental determination and correlation of acetaminophen solubility in aqueous solutions of choline chloride based deep eutectic solvents at various temperatures
- Investigation of solutions of ethyl alcohol and the deep eutectic solvent of Reline for their volumetric properties
- Viscometric study of myo-inositol in aqueous deep eutectic solvent solutions
- Solid-liquid phase equilibria in aqueous solutions of four common fertilizers at 303.2 K and atmospheric pressure
- Thermodynamic characterization of deep eutectic solvents at high pressures
- Apparent molar volumes and apparent molar heat capacities of aqueous urea, 1,1-dimethylurea, and N,N'-dimethylurea at temperatures from (278.15 to 348.15) K and at the pressure 0.35 MPa
- Volumetric and viscometric studies of urea in binary aqueous solutions of glucose at different temperatures
- Volumetric and viscometric studies of glucose in binary aqueous solutions of urea at different temperatures
- Effect of hydrophilic additives on volumetric and viscosity properties of amino acids in aqueous solutions at T = (283.15 to 333.15) K
- High-pressure density measurements for choline chloride: Urea deep eutectic solvent and its aqueous mixtures at T = (298.15 to 323.15) K and up to 50 MPa
- Densimetric and ultrasonic characterization of urea and its derivatives in water
- Interaction of homologous series of amino acids with sarcosine in presence of denaturant: Volumetric and calorimetric approach
- Hydration of urea and its derivatives - Volumetric and compressibility studies
- Effect of temperature and ionic strength on volumetric and acoustic properties of solutions of urea alkyl derivatives in aqueous NaCl
- Tensiometric, fluorescence and 1H NMR study of mixed micellization of non-steroidal anti-inflammatory drug sodium salt of ibuprofen in the presence of non-ionic surfactant in aqueous/urea solutions
- Measurement and modelling of urea solubility in aqueous propane-1,2,3-triol and prop-2-enoic acid solutions
- Binary and ternary solid-liquid phase equilibrium for the systems formed by succinic acid, urea and diethylene glycol: Determination and modelling
- Density and volumetric properties of the aqueous solutions of urea at temperatures from T = (278 to 333) K and pressures up to 100 MPa
- Aggregation of sodium salt of ibuprofen and sodium taurocholate mixture in different media: A tensiometry and fluorometry study
- Densities and volumetric properties of (choline chloride+urea) deep eutectic solvent and methanol mixtures in the temperature range of 293.15-323.15 K
- Solubilities of ammonia in choline chloride plus urea at (298.2-353.2) K and (0-300) kPa
- Effect of lithium chloride on the density and dynamic viscosity of choline chloride/urea deep eutectic solvent in the temperature range (303.15-358.15) K
- Solubility modelling and thermodynamic properties of allopurinol in aqueous solutions of four deep eutectic solvents
- Volume-related solvation and pair interaction parameters for dilute solutions of urea and tetramethylurea in ethylene glycol between 288.15 K and 328.15 K: A comparative analysis
- Counteracting effects of trimethylamine N-oxide and betaine on the interactions of urea with zwitterionic glycine peptides
- Molar heat capacities of choline chloride-based deep eutectic solvents and their binary mixtures with water
- Vapor pressure of aqueous choline chloride-based deep eutectic solvents (ethaline, glyceline, maline and reline) at 30 to 70 deg C
- (Solid + Liquid) Phase Equilibrium in the Aqueous Ternary System NaH2PO4 + CO(NH2)2 + H2O at (308.15, 328.15, and 348.15) K
- Activity Coefficients of RbF in Urea Water and Formamide Water Mixtures from Potentiometric Measurements
- Molar Heat Capacity of Selected Type III Deep Eutectic Solvents
- Molar Enthalpy of Mixing for Choline Chloride/Urea Deep Eutectic Solvent + Water System
- Viscosities and Carbon Dioxide Solubilities of Guanidine Carbonate and Malic Acid-Based Eutectic Solvents
- Thermophysical Properties and Solubility of Different Sugar-Derived Molecules in Deep Eutectic Solvents
- Evaluation of Methanesulfonate-Based Deep Eutectic Solvent for Ammonia Sorption
- Standard Volumetric Properties of Chiral N-Methyl-Substituted Glycolurils in Water between 278.15 and 318.15 K at Ambient Pressure
- Solubilities and Thermodynamic Properties of NH3 in Glycerin and its Derivatives
- Studies of the Effect of Urea on PEG-4000 Polymer-Water Interactions at 298.15 K
- Vapor-Liquid Equilibria Study of the Aqueous Systems Containing {Choline Chloride + Glucose or Urea} and Their Deep Eutectic Solvents at 298.15 K and 85 kPa
- Densities, Viscosities, and Electrical Conductivities of Pure Anhydrous Reline and Its Mixtures with Water in the Temperature Range (293.15 to 338.15) K
- NH3 Solubilities and Physical Properties of Ethylamine Hydrochloride Plus Urea Deep Eutectic Solvents
- Fixed-Path Length Laser-Induced Sound Pinging: A Streamlined Method for Sound Speed Determination in Arbitrary Liquids
- Thermal Properties of Choline Chloride/Urea System Studied under Moisture-Free Atmosphere
- Solutions of Urea and Tetramethylurea in Formamide and Water: A Comparative Analysis of Volume Characteristics and Solute-Solute Interaction Parameters at Temperatures from 288.15 to 328.15 K and Ambient Pressure
- Measurement of Activity Coefficients of Solutes at Infinite Dilution in (Dimethyl Sulfoxide + Acetamide, or Formamide, or Urea) Using Gas Liquid Chromatography at the Temperature 298.15 K
- Temperature and Concentration Dependence of Apparent Molar Volumes and Viscosities of NaCl, NH4Cl, CuCl2, CuSO4, and MgSO4 in Pure Water and Water + Urea Mixtures
- Solubility and Mass Transfer Coefficient Enhancement of Benzyl Acetate in Water through Hydrotropy
- Studies on the Diffusion Coefficients of Amino Acids in Aqueous Solutions
- Solubility of Rofecoxib in the Presence of Mannitol, Poly(vinylpyrrolidone) K30, Urea, Polyethylene Glycol 4000, and Polyethylene Glycol 6000 at (298.15, 303.15, and 308.15) K
- Effect of Hydrotropes on the Solubility and Mass Transfer Coefficient of Benzyl Benzoate in Water
- Acoustical Properties of Aqueous Solutions of Urea: Reference Data for the Ultrasonic Spectrometry of Liquids
- Measurement and Prediction of Thermochemical Properties: Improved Increments for the Estimation of Enthalpies of Sublimation and Standard Enthalpies of Formation of Alkyl Derivatives of Urea
- Bubble Point Pressure of the Solutions of H2SiF6 + H2O and H2SiF6 + CO(NH2)2 + H2O from 323 K to 353 K
- Volumetric and Transport Behavior of Different Carbohydrates in Aqueous and Aqueous Urea Mixtures at Different Temperatures
- Solubility of Urea in Acetonitrile Water Mixtures and Liquid Liquid Phase Separation of Urea-Saturated Acetonitrile Water Mixtures
- Volumetric Properties of Urea in the Mixture of N,N-Dimethylformamide with Water
- Viscosity of Urea in the Mixture of N,N-Dimethylformamide and Water
- Specific Conductivities and Viscosities of 0.1LiNO3 + 0.9[xCH3CONH2 + (1 x)CO(NH2)2] as Functions of Mole Fraction, x, and Temperature
- Phase Equilibrium in the Aqueous Ternary System NaH2PO4 + CO(NH2)2 + H2O at 298.15 K
- Apparent Molar Volumes and Expansibilities of Thiourea, 1,3-Dimethylurea, and 1,3-Dimethylthiourea in Water at Temperatures from T = (278.15 to 318.15) K and Atmospheric Pressure
- Measurement and Correlation of Solubilities of 4-Amino-3,6-dichloropyridazine in Ethanol + Water Mixtures from (303.15 to 323.15) K
- Densities and Viscosities of (Choline Chloride + Urea) Deep Eutectic Solvent and Its Aqueous Mixtures in the Temperature Range 293.15 K to 363.15 K
- Effect of Water on the Density, Viscosity, and CO2 Solubility in Choline Chloride/Urea
- Ternary Phase Diagram for Systems of Succinic Acid + Urea + Water, Glutaric Acid + Urea + Water and Adipic Acid + Urea + Water at 288.15 K and 303.15 K
- Solubility Properties and Spectral Characterization of Dilute SO2 in Binary Mixtures of Urea + Ethylene Glycol
- Measurement and Correlation of the Solubility for 4,4'-Diaminodiphenylmethane in Different Solvents
- Solubility of CO2 in a Choline Chloride + Urea Eutectic Mixture
- Effect of Diaminomethanal on the Vapor-Liquid Equilibria of the Ethanol + Water System at Atmospheric Pressure
- Joback Method
- KDB
- Aqueous Solubility Prediction Method
- Estimated Solubility Method
- McGowan Method
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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