- InChI
- InChI=1S/S2/c1-2
- InChI Key
- MAHNFPMIPQKPPI-UHFFFAOYSA-N
- Formula
- S2
- SMILES
- S=S
- Molecular Weight1
- 64.13
- CAS
- 23550-45-0
- Other Names
-
- sulfur (S2)
- sulfur molecule (S2)
- sulfur, diatomic
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- EA : Electron affinity (eV).
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔfusH° : Enthalpy of fusion 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).
- S°gas,1 bar : Molar entropy at standard conditions (1 bar) (J/mol×K).
- 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 |
|---|---|---|---|
| EA | [0.86; 2.50] | eV |
|
| EA | 1.67 ± 0.01 | eV | NIST |
| EA | 1.66 ± 0.04 | eV | NIST |
| EA | 1.56 ± 0.05 | eV | NIST |
| EA | 0.86 ± 0.10 | eV | NIST |
| EA | 2.50 ± 0.80 | eV | NIST |
| ΔfG° | 120.12 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | 128.60 ± 0.30 | kJ/mol | NIST |
| ΔfusH° | 7.38 | kJ/mol | Joback Calculated Property |
| ΔvapH° | 28.93 | kJ/mol | Joback Calculated Property |
| IE | [9.30; 10.10] | eV |
|
| IE | 9.36 ± 0.00 | eV | NIST |
| IE | 9.40 | eV | NIST |
| IE | 9.36 ± 0.00 | eV | NIST |
| IE | 9.60 ± 0.20 | eV | NIST |
| IE | 9.50 ± 0.20 | eV | NIST |
| IE | 9.50 ± 0.30 | eV | NIST |
| IE | 9.38 ± 0.03 | eV | NIST |
| IE | 9.36 ± 0.02 | eV | NIST |
| IE | 9.80 ± 0.30 | eV | NIST |
| IE | Outlier 10.10 ± 0.30 | eV | NIST |
| IE | 9.40 ± 0.10 | eV | NIST |
| IE | 9.38 ± 0.01 | eV | NIST |
| IE | 9.30 | eV | NIST |
| IE | 9.80 ± 0.50 | eV | NIST |
| IE | 9.42 ± 0.10 | eV | NIST |
| IE | 9.40 ± 0.05 | eV | NIST |
| IE | 9.32 | eV | NIST |
| IE | 9.36 ± 0.02 | eV | NIST |
| IE | 9.55 | eV | NIST |
| IE | 9.56 | eV | NIST |
| log10WS | 1.43 | Crippen Calculated Property | |
| logPoct/wat | -0.005 | Crippen Calculated Property | |
| McVol | 39.260 | ml/mol | McGowan Calculated Property |
| Pc | 8324.90 | kPa | Joback Calculated Property |
| S°gas,1 bar | 228.17 ± 0.01 | J/mol×K | NIST |
| Tboil | 335.56 | K | Joback Calculated Property |
| Tc | 553.36 | K | Joback Calculated Property |
| Tfus | 191.30 | K | Joback Calculated Property |
| Vc | 0.126 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [38.70; 41.86] | J/mol×K | [335.56; 553.36] |
|
| Cp,gas | 38.70 | J/mol×K | 335.56 | Joback Calculated Property |
| Cp,gas | 39.99 | J/mol×K | 371.86 | Joback Calculated Property |
| Cp,gas | 40.91 | J/mol×K | 408.16 | Joback Calculated Property |
| Cp,gas | 41.50 | J/mol×K | 444.46 | Joback Calculated Property |
| Cp,gas | 41.80 | J/mol×K | 480.76 | Joback Calculated Property |
| Cp,gas | 41.86 | J/mol×K | 517.06 | Joback Calculated Property |
| Cp,gas | 41.71 | J/mol×K | 553.36 | Joback Calculated Property |
Similar Compounds
Find more compounds similar to Sulfur dimer.
Sources
- Crippen Method
- Crippen Method
- Gibbs free energy of formation of rhodium sulfides
- Joback Method
- McGowan Method
- NIST Webbook
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Outlier This icon means
that the value is more than 2 standard deviations away from the
property mean.