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Molecule
Tetramethyl Orthosilicate
CAS: 681-84-5 · C4H12O4Si
2D Structure
3D Structure
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Basic Information
- CAS Registry Number
- 681-84-5
- Molecular Formula
- C4H12O4Si
- Molecular Mass
- 152.22 g/mol
Identifiers
CAS Registry Number
681-84-5
SMILES
CO[Si](OC)(OC)OC
InChI Key
LFQCEHFDDXELDD-UHFFFAOYSA-N
InChI
InChI=1S/C4H12O4Si/c1-5-9(6-2,7-3)8-4/h1-4H3
Names and Synonyms
- Tetramethyl Orthosilicate Common Name
- Silicic acid (H4SiO4), tetramethyl ester Synonym
- Methyl silicate ((MeO)4Si) Synonym
- Tetramethoxysilane Synonym
- Silane, tetramethoxy- Synonym
- Tetramethyl silicate Synonym
- Tetramethyl orthosilicate Synonym
- Methyl orthosilicate Synonym
- Methyl silicate ((CH3)4SiO4) Synonym
- Methyl silicate Synonym
- Silicon tetramethoxide Synonym
- Silicon methoxide (Si(OMe)4) Synonym
- TMOS Synonym
- KBM 04 Synonym
- Methyl Silicate 39 Synonym
- Methyl Silicate 28 Synonym
- T 1980 Synonym
- LS 540 Synonym
- SIT 7510.0 Synonym
- TSL 8114 Synonym
- Siluplex Synonym
- Dynasil M Synonym
- NSC 67383 Synonym
- OCD-T 2 Synonym
- MZ 51 Synonym
- MKC Silicate MS 39 Synonym
- Methyl Silicate 40 Synonym
- Methyl Silicate 51L Synonym
- WD 931 Synonym
- TO 588 Synonym
- NIC-C 5 Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 152.22 g/mol | CAS Common Chemistry |
| 152.22199999999998 g/mol | RDKit | |
| 152.222 g/mol | RDKit | |
| Density | 1.03 g/cm³ | CAS Common Chemistry |
| 1.032 g/cm3 @ 20 °C | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Tetramethyl_orthosilicate | CAS Common Chemistry |
| Canonical SMILES | O(C)[Si](OC)(OC)OC | CAS Common Chemistry |
| InChI | InChI=1S/C4H12O4Si/c1-5-9(6-2,7-3)8-4/h1-4H3 | CAS Common Chemistry |
| InChI Key | InChIKey=LFQCEHFDDXELDD-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | -2 °C | CAS Common Chemistry |
| Name | Tetramethoxysilane | CAS Common Chemistry |
| Heavy Atom Count | 9 | RDKit |
| Hydrogen Bond Acceptors | 4 | RDKit |
| Hydrogen Bond Donors | 0 | RDKit |
| Rotatable Bonds | 4 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 36.92 Ų | RDKit |
| LogP | 0.007599999999999829 | RDKit |
| 0.0076 | RDKit | |
| Molar Refractivity | 33.78999999999999 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 1.0 | RDKit |
| Exact Mass | 152.05048539400002 g/mol | RDKit |
| Boiling Point | 121-122 °C @ 760 Torr | CAS Common Chemistry |
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 = 152.22 g/mol; density = 1.030 g/mL. Edit any field — others recompute live.
