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Molecule
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CAS: 7440-21-3 · Si
2D Structure
3D Structure
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Basic Information
- CAS Registry Number
- 7440-21-3
- Molecular Formula
- Si
- Molecular Mass
- 28.09 g/mol
Identifiers
CAS Registry Number
7440-21-3
SMILES
[Si]
InChI Key
XUIMIQQOPSSXEZ-UHFFFAOYSA-N
InChI
InChI=1S/Si
Names and Synonyms
- Silicon Synonym
- KTC Synonym
- Silicon Synonym
- Silicon element Synonym
- Sicomill Grade 2 Synonym
- KDB 20 Synonym
- Sicomill 4C-P Synonym
- Silgrain Standard Synonym
- SILSO Synonym
- Polysilicon Synonym
- HGH 600 Synonym
- Metasilicon 325A Synonym
- Hexsil Synonym
- CZ-N Polished wafer Synonym
- SI 1059 Synonym
- GKO 3516A Synonym
- KR 1 Synonym
- KDB 10 Synonym
- 4FY Synonym
- Silgrain HQ Synonym
- Si(100) wafer Synonym
- Biosilicon Synonym
- Silgrain Synonym
- Silicon 100 Synonym
- PHC 20 Synonym
- KDB 0.5 Synonym
- KDB 0.1 Synonym
- Aldrich 267414-25G Synonym
- Sharp 80W Synonym
- FEB 450D Synonym
- JT 02 Synonym
- SIE 23PB Synonym
- Sicomill E 4 Synonym
- PSi-C 2 Synonym
- ψ-C 2 Synonym
- SIE 20PB Synonym
- KTC (element) Synonym
- Silicon 600 Synonym
- SI 500443 Synonym
- SI 500444 Synonym
- KEF 100 Synonym
- AgroSilicio Synonym
- Sili-K Synonym
- Si-S 10μm Synonym
- 6PW-A1 Synonym
- Silicon 200 Synonym
- SI 500452 Synonym
- a-Si 11 Synonym
- a-Si 12 Synonym
- a-Si 13 Synonym
- M-Si 600 Synonym
- Silgrain E-Si 400 Synonym
- T 2 Synonym
- T 2 (filler) Synonym
- SI 006031 Synonym
- WFP 6005 Synonym
- SAF 184 Synonym
- SI 100 Synonym
- KR-2 Synonym
- Wafer World 119 Synonym
- S 308 Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 28.09 g/mol | CAS Common Chemistry |
| 28.086 g/mol | RDKit | |
| Density | 2.33 g/cm³ | CAS Common Chemistry |
| 2.33 g/cm3 @ 25 °C | CAS Common Chemistry | |
| Boiling Point | 2355 °C | CAS Common Chemistry |
| Canonical SMILES | [Si] | CAS Common Chemistry |
| InChI | InChI=1S/Si | CAS Common Chemistry |
| InChI Key | InChIKey=XUIMIQQOPSSXEZ-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | 1410 °C | CAS Common Chemistry |
| Name | Silicon | CAS Common Chemistry |
| Heavy Atom Count | 1 | RDKit |
| Hydrogen Bond Acceptors | 0 | RDKit |
| Hydrogen Bond Donors | 0 | RDKit |
| Rotatable Bonds | 0 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 0.0 Ų | RDKit |
| LogP | -0.3808 | RDKit |
| Molar Refractivity | 5.754 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 0.0 | RDKit |
| Exact Mass | 27.97692653 g/mol | RDKit |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
9
8
7
6
5
4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
External Resources
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MW = 28.09 g/mol; density = 2.330 g/mL. Edit any field — others recompute live.
