- InChI
- InChI=1S/Si
- InChI Key
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N
- Formula
- Si
- SMILES
- [Si]
- Molecular Weight1
- 28.09
- CAS
- 7440-21-3
- PAff : Proton affinity (kJ/mol).
- BasG : Gas basicity (kJ/mol).
- EA : Electron affinity (eV).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- IE : Ionization energy (eV).
- Pvap : Vapor pressure (kPa).
- S°gas,1 bar : Molar entropy at standard conditions (1 bar) (J/mol×K).
- csound,fluid : Speed of sound in fluid (m/s).
- S°solid,1 bar : Solid phase molar entropy at standard conditions (J/mol×K).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| PAff | 837.00 | kJ/mol | NIST |
| BasG | 814.10 | kJ/mol | NIST |
| EA | [1.39; 1.39] | eV |
|
| EA | 1.39 ± 0.00 | eV | NIST |
| EA | 1.39 | eV | NIST |
| EA | 1.39 ± 0.00 | eV | NIST |
| EA | 1.39 ± 0.01 | eV | NIST |
| ΔfH°gas | 450.00 ± 8.00 | kJ/mol | NIST |
| IE | [8.10; 8.50] | eV |
|
| IE | 8.15 | eV | NIST |
| IE | 8.15 | eV | NIST |
| IE | 8.15 | eV | NIST |
| IE | 8.20 ± 0.50 | eV | NIST |
| IE | 8.15 ± 0.00 | eV | NIST |
| IE | 8.10 ± 0.50 | eV | NIST |
| IE | Outlier 8.50 ± 0.50 | eV | NIST |
| IE | 8.15 | eV | NIST |
| S°gas,1 bar | 167.98 ± 0.00 | J/mol×K | NIST |
| S°solid,1 bar | 18.81 ± 0.08 | J/mol×K | NIST |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| csound,fluid | [3916.10; 4020.00] | m/s | [1723.00; 1889.00] |
|
| csound,fluid | 3916.10 | m/s | 1723.00 | Tempera... |
| csound,fluid | 3929.00 | m/s | 1748.00 | Tempera... |
| csound,fluid | 3945.90 | m/s | 1755.00 | Tempera... |
| csound,fluid | 3973.30 | m/s | 1789.00 | Tempera... |
| csound,fluid | 3969.00 | m/s | 1795.00 | Tempera... |
| csound,fluid | 3976.30 | m/s | 1823.00 | Tempera... |
| csound,fluid | 4003.00 | m/s | 1852.00 | Tempera... |
| csound,fluid | 4020.00 | m/s | 1889.00 | Tempera... |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [1.00e-03; 100.37] | kPa | [1908.00; 3538.00] |
The Yaw...
|
| Equation | ln(Pvp) = A + B/(T + C) | |||
| Coefficient A | 1.80476e+01 | |||
| Coefficient B | -4.74659e+04 | |||
| Coefficient C | -5.98000e+00 | |||
| Temperature range, min. | 1908.00 | |||
| Temperature range, max. | 3538.00 | |||
| Pvap | 1.00e-03 | kPa | 1908.00 | Calculated Property |
| Pvap | 8.75e-03 | kPa | 2089.11 | Calculated Property |
| Pvap | 0.05 | kPa | 2270.22 | Calculated Property |
| Pvap | 0.26 | kPa | 2451.33 | Calculated Property |
| Pvap | 0.98 | kPa | 2632.44 | Calculated Property |
| Pvap | 3.13 | kPa | 2813.56 | Calculated Property |
| Pvap | 8.72 | kPa | 2994.67 | Calculated Property |
| Pvap | 21.61 | kPa | 3175.78 | Calculated Property |
| Pvap | 48.55 | kPa | 3356.89 | Calculated Property |
| Pvap | 100.37 | kPa | 3538.00 | Calculated Property |
Mixtures
Sources
- Temperature Dependence of the Velocity of Sound in Liquid Metals of Group XIV
- The heat capacity and entropy of the lithium silicides Li17Si4 and Li16.42Si4 in the temperature range from (2 to 873) K
- KDB
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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Outlier This icon means
that the value is more than 2 standard deviations away from the
property mean.