- InChI
- InChI=1S/C2H4N2S2/c3-1(5)2(4)6/h(H2,3,5)(H2,4,6)
- InChI Key
- OAEGRYMCJYIXQT-UHFFFAOYSA-N
- Formula
- C2H4N2S2
- SMILES
- NC(=S)C(N)=S
- Molecular Weight1
- 120.20
- CAS
- 79-40-3
- Other Names
-
- Dithiooxalic acid diamide
- Dithiooxamide
- Dithioxamide
- Hydrorubeanic acid
- NSC 1893
- Oxaldiimidic acid, dithio-
- Oxamide, dithio-
- RVK
- Rubean
- Rubeane
- Rubeanic acid
- USAF B-43
- USAF EK-4394
- USAF MK-6
- 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).
- ΔsubH° : Enthalpy of sublimation at standard conditions (kJ/mol).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- 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).
- Tboil : Normal Boiling Point Temperature (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (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 |
|---|---|---|---|
| ΔcH°solid | -2541.90 ± 0.50 | kJ/mol | NIST |
| ΔfG° | 332.98 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | 83.00 ± 1.50 | kJ/mol | NIST |
| ΔfH°solid | -20.80 ± 1.00 | kJ/mol | NIST |
| ΔfusH° | 20.54 | kJ/mol | Joback Calculated Property |
| ΔsubH° | 105.44 | kJ/mol | NIST |
| ΔvapH° | 54.79 | kJ/mol | Joback Calculated Property |
| log10WS | -1.23 | Crippen Calculated Property | |
| logPoct/wat | -0.441 | Crippen Calculated Property | |
| McVol | 83.100 | ml/mol | McGowan Calculated Property |
| Pc | 8087.06 | kPa | Joback Calculated Property |
| Tboil | 530.30 | K | Joback Calculated Property |
| Tc | 794.73 | K | Joback Calculated Property |
| Tfus | 347.36 | K | Joback Calculated Property |
| Vc | 0.278 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [150.90; 170.70] | J/mol×K | [530.30; 794.73] | 
|
| Cp,gas | 150.90 | J/mol×K | 530.30 | Joback Calculated Property |
| Cp,gas | 155.41 | J/mol×K | 574.37 | Joback Calculated Property |
| Cp,gas | 159.27 | J/mol×K | 618.44 | Joback Calculated Property |
| Cp,gas | 162.60 | J/mol×K | 662.52 | Joback Calculated Property |
| Cp,gas | 165.53 | J/mol×K | 706.59 | Joback Calculated Property |
| Cp,gas | 168.19 | J/mol×K | 750.66 | Joback Calculated Property |
| Cp,gas | 170.70 | J/mol×K | 794.73 | Joback Calculated Property |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [1.33; 202.66] | kPa | [470.84; 578.63] |
The Yaw...
|
| Equation | ln(Pvp) = A + B/(T + C) | |||
| Coefficient A | 2.72578e+01 | |||
| Coefficient B | -1.26988e+04 | |||
| Temperature range, min. | 470.84 | |||
| Temperature range, max. | 578.63 | |||
| Pvap | 1.33 | kPa | 470.84 | Calculated Property |
| Pvap | 2.60 | kPa | 482.82 | Calculated Property |
| Pvap | 4.92 | kPa | 494.79 | Calculated Property |
| Pvap | 9.02 | kPa | 506.77 | Calculated Property |
| Pvap | 16.09 | kPa | 518.75 | Calculated Property |
| Pvap | 27.95 | kPa | 530.72 | Calculated Property |
| Pvap | 47.40 | kPa | 542.70 | Calculated Property |
| Pvap | 78.55 | kPa | 554.68 | Calculated Property |
| Pvap | 127.44 | kPa | 566.65 | Calculated Property |
| Pvap | 202.66 | kPa | 578.63 | Calculated Property |
Similar Compounds
Find more compounds similar to Ethanedithioamide.
Sources
- Crippen Method
- Crippen Method
- Joback Method
- McGowan Method
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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