- InChI
- InChI=1S/C3H8N2O/c1-4-3(6)5-2/h1-2H3,(H2,4,5,6)
- InChI Key
- MGJKQDOBUOMPEZ-UHFFFAOYSA-N
- Formula
- C3H8N2O
- SMILES
- CNC(=O)NC
- Molecular Weight1
- 88.11
- CAS
- 96-31-1
- Other Names
-
- (CH3NH)2CO
- 1,1'-Dimethylurea
- 1,3-dimethylurea
- DMU
- N,N'-Dimethylharnstoff
- N,N'-dimethylurea
- NSC 14910
- Symmetric dimethylurea
- sym-Dimethylurea
- urea, 1,3-dimethyl-
- PAff : Proton affinity (kJ/mol).
- BasG : Gas basicity (kJ/mol).
- ΔcH°solid : Standard solid enthalpy of combustion (kJ/mol).
- Cp,gas : Ideal gas 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°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).
- ΔfusS : Entropy of fusion at a given temperature (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 | 903.30 | kJ/mol | NIST |
| BasG | 873.50 | kJ/mol | NIST |
| ΔcH°solid | [-2011.70; -2010.20] | kJ/mol |
|
| ΔcH°solid | -2011.70 ± 2.80 | kJ/mol | NIST |
| ΔcH°solid | -2010.20 ± 1.10 | kJ/mol | NIST |
| ΔfG° | 24.24 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | -221.60 ± 1.60 | kJ/mol | NIST |
| ΔfH°solid | [-313.70; -312.10] | kJ/mol |
|
| ΔfH°solid | -312.10 ± 2.80 | kJ/mol | NIST |
| ΔfH°solid | -313.70 ± 1.20 | kJ/mol | NIST |
| ΔfusH° | 15.32 | kJ/mol | Joback Calculated Property |
| ΔsubH° | 89.30 ± 0.40 | kJ/mol | NIST |
| ΔvapH° | 41.89 | kJ/mol | Joback Calculated Property |
| IE | [9.23; 9.42] | eV |
|
| IE | 9.42 ± 0.05 | eV | NIST |
| IE | 9.23 | eV | NIST |
| log10WS | -0.21 | Crippen Calculated Property | |
| logPoct/wat | -0.455 | Crippen Calculated Property | |
| McVol | 74.660 | ml/mol | McGowan Calculated Property |
| Pc | 4980.35 | kPa | Joback Calculated Property |
| Tboil | 542.20 | K | NIST |
| Tc | 612.72 | K | Joback Calculated Property |
| Tfus | [376.35; 379.90] | K |
|
| Tfus | 376.35 | K | Measure... |
| Tfus | 377.50 ± 0.50 | K | NIST |
| Tfus | 379.50 ± 0.20 | K | NIST |
| Tfus | 379.90 ± 0.10 | K | NIST |
| Ttriple | [371.00; 376.35] | K |
|
| Ttriple | 376.35 | K | Thermod... |
| Ttriple | 371.00 ± 0.00 | K | NIST |
| Vc | 0.280 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [143.48; 184.88] | J/mol×K | [422.25; 612.72] |
|
|
T(K) Ideal gas heat capacity (J/mol×K) 140 150 160 170 180 450 500 550 600 | ||||
| Cp,gas | 143.48 | J/mol×K | 422.25 | Joback Calculated Property |
| Cp,gas | 151.21 | J/mol×K | 453.99 | Joback Calculated Property |
| Cp,gas | 158.59 | J/mol×K | 485.74 | Joback Calculated Property |
| Cp,gas | 165.65 | J/mol×K | 517.48 | Joback Calculated Property |
| Cp,gas | 172.37 | J/mol×K | 549.23 | Joback Calculated Property |
| Cp,gas | 178.78 | J/mol×K | 580.97 | Joback Calculated Property |
| Cp,gas | 184.88 | J/mol×K | 612.72 | Joback Calculated Property |
| ΔfusH | 13.62 | kJ/mol | 379.50 | NIST |
| ΔsubH | [86.60; 92.10] | kJ/mol | [344.50; 354.00] |
|
|
T(K) Enthalpy of sublimation at a given temperature (kJ/mol) 87 88 89 90 91 92 345 350 | ||||
| ΔsubH | 87.20 ± 0.60 | kJ/mol | 344.50 | NIST |
| ΔsubH | 87.60 ± 1.00 | kJ/mol | 347.00 | NIST |
| ΔsubH | 87.50 ± 1.00 | kJ/mol | 347.00 | NIST |
| ΔsubH | 86.60 ± 0.50 | kJ/mol | 350.00 | NIST |
| ΔsubH | 92.10 ± 1.00 | kJ/mol | 354.00 | NIST |
| Psub | [1.90e-04; 0.01] | kPa | [313.30; 357.70] |
|
|
T(K) Sublimation pressure (kPa) 0 2.00e-3 4.00e-3 6.00e-3 8.00e-3 0.01 0.01 320 330 340 350 | ||||
| Psub | 1.90e-04 | kPa | 313.30 | Measure... |
| Psub | 5.10e-04 | kPa | 322.90 | Measure... |
| Psub | 7.70e-04 | kPa | 326.90 | Measure... |
| Psub | 1.19e-03 | kPa | 330.90 | Measure... |
| Psub | 1.75e-03 | kPa | 335.00 | Measure... |
| Psub | 2.42e-03 | kPa | 339.00 | Measure... |
| Psub | 3.68e-03 | kPa | 343.20 | Measure... |
| Psub | 5.32e-03 | kPa | 347.30 | Measure... |
| Psub | 7.38e-03 | kPa | 351.40 | Measure... |
| Psub | 9.66e-03 | kPa | 354.60 | Measure... |
| Psub | 0.01 | kPa | 357.70 | Measure... |
| ΔfusS | 35.90 | J/mol×K | 379.50 | NIST |
Similar Compounds
Find more compounds similar to Urea, N,N'-dimethyl-.
Mixtures
- Urea, N,N'-dimethyl- + Water
- Isopropyl Alcohol + Urea, N,N'-dimethyl-
- Acetone + Urea, N,N'-dimethyl-
- Acetonitrile + Urea, N,N'-dimethyl-
- Urea, N,N'-dimethyl- + Ethyl Acetate
- Acetic acid, butyl ester + Urea, N,N'-dimethyl-
- Urea, N,N'-dimethyl- + Methyl Alcohol
- Urea, N,N'-dimethyl- + 1-Pentanol
- Ethanol + Urea, N,N'-dimethyl-
- Urea, N,N'-dimethyl- + 1-Hexanol
- 1-Propanol + Urea, N,N'-dimethyl-
- 1-Butanol + Urea, N,N'-dimethyl-
- 1-Octanol + Urea, N,N'-dimethyl-
Sources
- Crippen Method
- Crippen Method
- 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
- Densimetric and ultrasonic characterization of urea and its derivatives in water
- Measurement and correlation of solubility and solution thermodynamics of 1,3-dimethylurea in different solvents from T = (288.15 to 328.15) K
- Thermodynamics of 1,3-dimethylurea in eight alcohols
- 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
- 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
- Thermal Expansion and Structure of 1,3-Dimethylurea, Tetramethylurea, and Tetrabutylammonium Bromide Aqueous Solutions Derived from Density Measurements
- Density and Viscosity of Aqueous Solutions of 1,3-Dimethylurea from (288.15 to 333.15) K
- Joback Method
- McGowan Method
- NIST Webbook
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