- InChI
- InChI=1S/C4H4N2/c1-2-4-6-5-3-1/h1-4H
- InChI Key
- PBMFSQRYOILNGV-UHFFFAOYSA-N
- Formula
- C4H4N2
- SMILES
- c1ccnnc1
- Molecular Weight1
- 80.09
- CAS
- 289-80-5
- Other Names
-
- 1,2-Diazabenzene
- 1,2-Diazine
- Orthodiazine
- ω : Acentric Factor.
- PAff : Proton affinity (kJ/mol).
- BasG : Gas basicity (kJ/mol).
- ΔcH°liquid : Standard liquid enthalpy of combustion (kJ/mol).
- EA : Electron affinity (eV).
- 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).
- 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).
- Inp : Non-polar retention indices.
- 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 |
|---|---|---|---|
| ω | 0.2858 | Relay (1.0) Calculated Property | |
| PAff | 907.20 | kJ/mol | NIST |
| BasG | 877.10 | kJ/mol | NIST |
| ΔcH°liquid | -2370.60 ± 0.92 | kJ/mol | NIST |
| EA | [-0.32; 0.01] | eV |
|
| EA | 0.01 | eV | NIST |
| EA | -0.32 | eV | NIST |
| ΔfG° | 243.39 | kJ/mol | Relay (1.0-beta) Calculated Property |
| ΔfH°gas | 278.40 ± 1.30 | kJ/mol | NIST |
| ΔfH°liquid | 224.90 ± 0.92 | kJ/mol | NIST |
| ΔvapH° | [53.50; 53.50] | kJ/mol |
|
| ΔvapH° | 53.50 ± 0.40 | kJ/mol | NIST |
| ΔvapH° | 53.50 ± 0.40 | kJ/mol | NIST |
| ΔvapH° | 53.50 | kJ/mol | NIST |
| IE | [8.64; 9.31] | eV |
|
| IE | 8.74 ± 0.11 | eV | NIST |
| IE | 8.64 | eV | NIST |
| IE | 8.71 ± 0.00 | eV | NIST |
| IE | 8.90 | eV | NIST |
| IE | 8.71 ± 0.01 | eV | NIST |
| IE | 9.31 | eV | NIST |
| IE | 9.31 | eV | NIST |
| log10WS | [1.10; 1.10] |
|
|
| log10WS | 1.10 | Aq. Solubility Prediction | |
| log10WS | 1.10 | Estimated Solubility | |
| logPoct/wat | 0.477 | Crippen Calculated Property | |
| McVol | 63.420 | ml/mol | McGowan Calculated Property |
| Pc | 6057.45 | kPa | Relay (1.0-beta) Calculated Property |
| Inp | [894.00; 915.00] |
|
|
| Inp | 915.00 | NIST | |
| Inp | 915.00 | NIST | |
| Inp | 915.00 | NIST | |
| Inp | 894.00 | NIST | |
| Inp | 894.00 | NIST | |
| Tboil | [480.35; 481.20] | K |
|
| Tboil | 481.20 | K | NIST |
| Tboil | 480.35 ± 0.60 | K | NIST |
| Tc | 621.49 | K | Relay (1.0) Calculated Property |
| Tfus | 278.85 | K | Relay (1.0) Calculated Property |
| Vc | 0.234 | m3/kmol | Relay (1.0) Calculated Property |
Similar Compounds
Find more compounds similar to Pyridazine.
Sources
- Cheméo Relay (1.0)
- Cheméo Relay (1.0, beta) Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
- Crippen Method
- Aqueous Solubility Prediction Method
- Estimated Solubility Method
- McGowan Method
- NIST Webbook
Note: Cheméo is only indexing the data, follow the source links to retrieve the latest data. The source is also providing more information like the publication year, authors and more. Take the time to validate and double check the source of the data.