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Silicon
CAS: 7440-21-3 | Si
2D Structure
3D Structure
Loading 3D structure...
Basic Information
CAS Registry Number:
7440-21-3
Molecular Formula:
Si
Molecular Weight:
28.086 g/mol
Names and Synonyms:
Silicon
KTC
Silicon
Silicon element
Sicomill Grade 2
KDB 20
Sicomill 4C-P
Silgrain Standard
SILSO
Polysilicon
HGH 600
Metasilicon 325A
Hexsil
CZ-N Polished wafer
SI 1059
GKO 3516A
KR 1
KDB 10
4FY
Silgrain HQ
Si(100) wafer
Biosilicon
Silgrain
Silicon 100
PHC 20
KDB 0.5
KDB 0.1
Aldrich 267414-25G
Sharp 80W
FEB 450D
JT 02
SIE 23PB
Sicomill E 4
PSi-C 2
ψ-C 2
SIE 20PB
KTC (element)
Silicon 600
SI 500443
SI 500444
KEF 100
AgroSilicio
Sili-K
Si-S 10μm
6PW-A1
Silicon 200
SI 500452
a-Si 11
a-Si 12
a-Si 13
M-Si 600
Silgrain E-Si 400
T 2
T 2 (filler)
SI 006031
WFP 6005
SAF 184
SI 100
KR-2
Wafer World 119
S 308
Identifiers:
SMILES:
[Si]
InChI:
InChI=1S/Si
Spectral Data
NMR, IR, and Mass spectral data
1H NMR
13C NMR
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.
All Properties
Comprehensive physical and chemical properties
| Category | Property | Value | Source |
|---|---|---|---|
| Molecular | Molecular Weight | 28.086 g/mol | RDKit |
| Exact | Exact Molecular Weight | 27.97692653 g/mol | RDKit |
| Heavy | Heavy Atom Count | 1 count | RDKit |
| Hydrogen | Hydrogen Bond Acceptors | 0 count | RDKit |
| Hydrogen Bond Donors | 0 count | RDKit | |
| Rotatable | Rotatable Bonds | 0 count | RDKit |
| Aromatic | Aromatic Ring Count | 0 count | RDKit |
| Topological | Topological Polar Surface Area | 0.0 Ų | RDKit |
| Physical Properties | LogP | -0.3808 | RDKit |
| molecular_mass | 28.09 g/mol | Legacy Database | |
| density | 2.33 g/cm³ | Legacy Database | |
| cas-boiling-point | 2355 °C | Legacy Database | |
| cas-canonical-smile | [Si] | Legacy Database | |
| cas-density | 2.33 g/cm3 @ Temp: 25 °C | Legacy Database | |
| cas-inchi | InChI=1S/Si | Legacy Database | |
| cas-inchi-key | InChIKey=XUIMIQQOPSSXEZ-UHFFFAOYSA-N | Legacy Database | |
| cas-melting-point | 1410 °C | Legacy Database | |
| cas-name | Silicon | Legacy Database | |
| Molar | Molar Refractivity | 5.754 | RDKit |
