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Octamethylcyclotetrasiloxane
CAS: 556-67-2 | C8H24O4Si4
2D Structure
3D Structure
Loading 3D structure...
Basic Information
CAS Registry Number:
556-67-2
Molecular Formula:
C8H24O4Si4
Molecular Mass:
296.62 g/mol
Names and Synonyms:
Octamethylcyclotetrasiloxane
Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octamethyl-
Cyclotetrasiloxane, octamethyl-
2,2,4,4,6,6,8,8-Octamethylcyclotetrasiloxane
Octamethylcyclotetrasiloxane
NUC Silicone VS 7207
Union Carbide 7207
SF 1173
UC 7207
VS 7207
Cyclic dimethylsiloxane tetramer
KF 994
SH 344
Abil K 4
Octamethylcyclotetrasiloxanes
Silbione V 2
Dow Corning 244
Dow Corning 344
Volasil 244
DC 344
Mirasil CM 4
TSF 404
LS 8620
D 4
Dabco DC 5258
DC 5258
Tetracyclomethicone
Y 7175
NSC 345674
SH 244
Silbione 70045V2
DC 244
Dow Corning 244 Fluid
DWQ 110
DWQ 120
PMX 0110
XF 3803
YF 393
ZBH 270
SH 244 Fluid
SH 30
Additive 8030
2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
L 6907
Identifiers:
SMILES:
C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1
InChI:
InChI=1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3
Key Properties
Boiling Point
175 °C
CAS Common Chemistry
Melting Point
17.5 °C
CAS Common Chemistry
Density
0.96 g/cm³
CAS Common Chemistry
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
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 296.62 g/mol | CAS Common Chemistry |
| 296.07516536799994 g/mol | RDKit | |
| Density | 0.96 g/cm³ | CAS Common Chemistry |
| 0.9558 g/cm3 | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Octamethylcyclotetrasiloxane | CAS Common Chemistry |
| Boiling Point | 175 °C | CAS Common Chemistry |
| Canonical SMILES | O1[Si](O[Si](O[Si](O[Si]1(C)C)(C)C)(C)C)(C)C | CAS Common Chemistry |
| InChI | InChI=1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3 | CAS Common Chemistry |
| InChI Key | InChIKey=HMMGMWAXVFQUOA-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | 17.5 °C | CAS Common Chemistry |
| Name | Octamethylcyclotetrasiloxane | CAS Common Chemistry |
| Heavy Atom Count | 16 | RDKit |
| Hydrogen Bond Acceptors | 4 | RDKit |
| Hydrogen Bond Donors | 0 | RDKit |
| Rotatable Bonds | 0 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 36.92 Ų | RDKit |
| LogP | 2.8736000000000015 | RDKit |
| Molar Refractivity | 74.26800000000004 | RDKit |
