- InChI
- InChI=1S/C5H12N2O/c1-6(2)5(8)7(3)4/h1-4H3
- InChI Key
- AVQQQNCBBIEMEU-UHFFFAOYSA-N
- Formula
- C5H12N2O
- SMILES
- CN(C)C(=O)N(C)C
- Molecular Weight1
- 116.16
- CAS
- 632-22-4
- Other Names
-
- ((CH3)2N)2CO
- 1,1,3,3-Tetramethylurea
- N,N,N',N'-Tetramethylurea
- NSC 91488
- TMU
- Temur
- Tetramethylurea
- Tetramethyluree
- Urea, 1,1,3,3-tetramethyl-
- Urea, N,N,N',N'-tetramethyl-
- urea, tetramethyl
- PAff : Proton affinity (kJ/mol).
- BasG : Gas basicity (kJ/mol).
- ΔcH°liquid : Standard liquid enthalpy of combustion (kJ/mol).
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- Cp,liquid : Liquid phase heat capacity (J/mol×K).
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔfH°liquid : Liquid 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).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- ΔvapH : Enthalpy of vaporization at a given temperature (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).
- Pvap : Vapor pressure (kPa).
- ρl : Liquid Density (kg/m3).
- ΔfusS : Entropy of fusion at a given temperature (J/mol×K).
- csound,fluid : Speed of sound in fluid (m/s).
- 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 | 930.60 | kJ/mol | NIST |
| BasG | 899.60 | kJ/mol | NIST |
| ΔcH°liquid | -3420.36 ± 0.81 | kJ/mol | NIST |
| ΔfG° | 83.86 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | -205.60 ± 1.10 | kJ/mol | NIST |
| ΔfH°liquid | -262.20 ± 1.10 | kJ/mol | NIST |
| ΔfusH° | 16.35 | kJ/mol | Joback Calculated Property |
| ΔvapH° | 56.60 ± 0.80 | kJ/mol | NIST |
| IE | [8.64; 8.74] | eV |
|
| IE | 8.74 ± 0.05 | eV | NIST |
| IE | 8.64 | eV | NIST |
| IE | 8.67 | eV | NIST |
| log10WS | [0.94; 0.94] |
|
|
| log10WS | 0.94 | Aq. Sol... | |
| log10WS | 0.94 | Estimat... | |
| logPoct/wat | 0.230 | Crippen Calculated Property | |
| McVol | 102.840 | ml/mol | McGowan Calculated Property |
| Pc | 3722.56 | kPa | Joback Calculated Property |
| Tboil | 449.70 | K | NIST |
| Tc | 567.86 | K | Joback Calculated Property |
| Tfus | [272.00; 272.20] | K |
|
| Tfus | 272.05 | K | Aq. Sol... |
| Tfus | 272.20 ± 0.10 | K | NIST |
| Tfus | 272.00 ± 0.10 | K | NIST |
| Ttriple | 270.48 ± 0.02 | K | NIST |
| Vc | 0.357 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [195.42; 255.33] | J/mol×K | [392.55; 567.86] |
|
|
T(K) Ideal gas heat capacity (J/mol×K) 190 200 210 220 230 240 250 260 400 450 500 550 | ||||
| Cp,gas | 195.42 | J/mol×K | 392.55 | Joback Calculated Property |
| Cp,gas | 206.67 | J/mol×K | 421.77 | Joback Calculated Property |
| Cp,gas | 217.40 | J/mol×K | 450.99 | Joback Calculated Property |
| Cp,gas | 227.61 | J/mol×K | 480.21 | Joback Calculated Property |
| Cp,gas | 237.32 | J/mol×K | 509.42 | Joback Calculated Property |
| Cp,gas | 246.56 | J/mol×K | 538.64 | Joback Calculated Property |
| Cp,gas | 255.33 | J/mol×K | 567.86 | Joback Calculated Property |
| Cp,liquid | 241.20 | J/mol×K | 320.00 | NIST |
| ΔfusH | [13.40; 14.00] | kJ/mol | [272.10; 272.20] |
|
|
T(K) Enthalpy of fusion at a given temperature (kJ/mol) 13.4 13.5 13.6 13.7 13.8 13.9 14 272.1 272.15000000000003 272.2 | ||||
| ΔfusH | 14.00 | kJ/mol | 272.10 | NIST |
| ΔfusH | 13.40 | kJ/mol | 272.20 | NIST |
| ΔfusH | 13.40 | kJ/mol | 272.20 | NIST |
| ΔfusH | 13.40 | kJ/mol | 272.20 | NIST |
| ΔfusH | 13.40 | kJ/mol | 272.20 | NIST |
| ΔvapH | [41.70; 52.20] | kJ/mol | [385.00; 385.00] |
|
| ΔvapH | 41.70 | kJ/mol | 385.00 | NIST |
| ΔvapH | 52.20 | kJ/mol | 385.00 | NIST |
| ρl | [934.35; 980.34] | kg/m3 | [278.15; 328.15] |
|
|
T(K) Liquid Density (kg/m3) 930 940 950 960 970 980 280 300 320 | ||||
| ρl | 980.34 | kg/m3 | 278.15 | Volume-... |
| ρl | 971.20 | kg/m3 | 288.15 | Volume-... |
| ρl | 971.23 | kg/m3 | 288.15 | Volume-... |
| ρl | 971.22 | kg/m3 | 288.15 | Solutio... |
| ρl | 967.00 | kg/m3 | 293.15 | Investi... |
| ρl | 962.07 | kg/m3 | 298.15 | Volume-... |
| ρl | 962.05 | kg/m3 | 298.15 | Solutio... |
| ρl | 962.04 | kg/m3 | 298.15 | Volume-... |
| ρl | 952.88 | kg/m3 | 308.15 | Volume-... |
| ρl | 952.85 | kg/m3 | 308.15 | Solutio... |
| ρl | 952.84 | kg/m3 | 308.15 | Volume-... |
| ρl | 943.62 | kg/m3 | 318.15 | Volume-... |
| ρl | 943.65 | kg/m3 | 318.15 | Volume-... |
| ρl | 943.62 | kg/m3 | 318.15 | Solutio... |
| ρl | 934.38 | kg/m3 | 328.15 | Volume-... |
| ρl | 934.35 | kg/m3 | 328.15 | Solutio... |
| ΔfusS | [49.20; 49.20] | J/mol×K | [272.20; 272.20] |
|
| ΔfusS | 49.20 | J/mol×K | 272.20 | NIST |
| ΔfusS | 49.20 | J/mol×K | 272.20 | NIST |
| csound,fluid | [1355.31; 1432.53] | m/s | [288.15; 308.15] |
|
|
T(K) Speed of sound in fluid (m/s) 1360 1380 1400 1420 1440 290 295 300 305 | ||||
| csound,fluid | 1432.53 | m/s | 288.15 | Effect ... |
| csound,fluid | 1413.44 | m/s | 293.15 | Effect ... |
| csound,fluid | 1397.60 | m/s | 298.15 | Volumet... |
| csound,fluid | 1393.92 | m/s | 298.15 | Effect ... |
| csound,fluid | 1374.53 | m/s | 303.15 | Effect ... |
| csound,fluid | 1355.31 | m/s | 308.15 | Effect ... |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [0.17; 202.64] | kPa | [293.85; 534.14] |
The Yaw...
|
| Equation | ln(Pvp) = A + B/(T + C) | |||
| Coefficient A | 1.20526e+01 | |||
| Coefficient B | -3.16454e+03 | |||
| Coefficient C | -6.47090e+01 | |||
| Temperature range, min. | 293.85 | |||
| Temperature range, max. | 534.14 | |||
|
T(K) Vapor pressure (kPa) 0 50 100 150 200 300 400 500 | ||||
| Pvap | 0.17 | kPa | 293.85 | Calculated Property |
| Pvap | 0.73 | kPa | 320.55 | Calculated Property |
| Pvap | 2.34 | kPa | 347.25 | Calculated Property |
| Pvap | 6.17 | kPa | 373.95 | Calculated Property |
| Pvap | 13.91 | kPa | 400.65 | Calculated Property |
| Pvap | 27.83 | kPa | 427.34 | Calculated Property |
| Pvap | 50.63 | kPa | 454.04 | Calculated Property |
| Pvap | 85.30 | kPa | 480.74 | Calculated Property |
| Pvap | 134.95 | kPa | 507.44 | Calculated Property |
| Pvap | 202.64 | kPa | 534.14 | Calculated Property |
Similar Compounds
Find more compounds similar to Urea, tetramethyl-.
Mixtures
- Urea, tetramethyl- + Water
- Urea, tetramethyl- + Formamide
- sodium chloride + Urea, tetramethyl- + Water
- 1,2-Ethanediol + Urea, tetramethyl-
- Carbon dioxide + Urea, tetramethyl-
- Sulfur dioxide + Urea, tetramethyl-
Sources
- Crippen Method
- Volumetric and compressibility properties of liquid water as a solute in glycolic, propylene carbonate, and tetramethylurea solutions at T = 298.15 K
- Densimetric and ultrasonic characterization of urea and its derivatives in water
- Effect of temperature and ionic strength on volumetric and acoustic properties of solutions of urea alkyl derivatives in aqueous NaCl
- Solubility and thermodynamic properties of SO2 in three low volatile urea derivatives
- 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
- Volume-related interaction parameters for dilute solutions of tetramethylurea in normal and heavy water between 278.15 K and 318.15 K
- Enthalpy-related interaction parameters in H/D isotopically distinguishable aqueous solutions of tetramethylurea cyclic derivatives at 298.15 K
- Investigation of the Solubilities of Carbon Dioxide in Some Low Volatile Solvents and Their Thermodynamic Properties
- 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
- Thermal Expansion and Structure of 1,3-Dimethylurea, Tetramethylurea, and Tetrabutylammonium Bromide Aqueous Solutions Derived from Density Measurements
- Joback Method
- Aqueous Solubility Prediction Method
- Estimated Solubility Method
- McGowan Method
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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