CAS 556-67-2
:Octamethylcyclotetrasiloxane
Description:
Octamethylcyclotetrasiloxane, commonly referred to as D4, is a cyclic siloxane compound characterized by its unique structure consisting of four silicon atoms and four oxygen atoms, forming a ring with eight methyl groups attached to the silicon atoms. This compound is a colorless, odorless liquid at room temperature and is known for its low viscosity and volatility. D4 exhibits excellent thermal stability and chemical resistance, making it useful in various applications, including personal care products, silicone polymers, and industrial lubricants. It has a relatively low surface tension, which contributes to its effectiveness as a spreading agent. However, environmental and health concerns have been raised regarding its potential bioaccumulation and endocrine-disrupting properties, leading to regulatory scrutiny in several regions. As a result, its use is being monitored and restricted in certain applications. Overall, Octamethylcyclotetrasiloxane is a versatile compound with significant industrial applications, but its environmental impact necessitates careful consideration in its use and disposal.
Formula:C8H24O4Si4
InChI:InChI=1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3
InChI key:InChIKey=HMMGMWAXVFQUOA-UHFFFAOYSA-N
SMILES:C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1
Synonyms:- 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-Tetroxatetrasilocane
- 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
- 2,2,4,4,6,6,8,8-Octamethylcyclotetrasiloxane
- Abil K 4
- Additive 8030
- Cyclic dimethylsiloxane tetramer
- Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octamethyl-
- Cyclotetrasiloxane, octamethyl-
- D 4
- D4
- Dabco DC 5258
- Dc 244
- Dc 344
- Dc 5258
- Dow Corning 244
- Dow Corning 244 Fluid
- Dow Corning 344
- Dwq 110
- Dwq 120
- Kf 994
- L 6907
- Ls 8620
- Mirasil CM 4
- NUC Silicone VS 7207
- Nsc 345674
- Octamethyl cyclotetrasilazane
- Octamethylcyclotetrasiloxan
- Octamethylcyclotetrasiloxane
- Octamethylcyclotetrasiloxanes
- Octametilciclotetrasiloxano
- Octaphenyl Silsesquioxane
- Pmx 0110
- SH 244 Fluid
- Sf 1173
- Sh 244
- Sh 30
- Sh 344
- Silbione 70045V2
- Silbione V 2
- Tetracyclomethicone
- Tsf 404
- Uc 7207
- Union Carbide 7207
- Volasil 244
- Vs 7207
- Xf 3803
- Y 7175
- Yf 393
- See more synonyms
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Found 13 products.
Octamethylcyclotetrasiloxane
CAS:Formula:C8H24O4Si4Purity:>98.0%(GC)Color and Shape:Colorless to Almost colorless clear liquidMolecular weight:296.62Octamethylcyclotetrasiloxane, 98%
CAS:<p>Octamethylcyclotetrasiloxane is used to prepare silicone oil, silicone rubber and silicone resin having different degrees of polymerization through ring opening and polymerizing. It is also widely used in various fields viz. construction, electronics, textile, automobile, personal care, food, and ma</p>Formula:C8H24O4Si4Purity:98%Color and Shape:Clear colorless, LiquidMolecular weight:296.62Octamethylcyclotetrasiloxane, 98%
CAS:<p>Octamethylcyclotetrasiloxane, 98%</p>Formula:C8H24O4Si4Purity:98%Color and Shape:colorless liq.Molecular weight:296.62Cyclomethicone 4
CAS:Organo-inorganic compounds, nesoiFormula:C8H24O4Si4Color and Shape:LiquidMolecular weight:296.07517Octamethylcyclotetrasiloxane
CAS:OctamethylcyclotetrasiloxanePurity:≥95%Molecular weight:296.618g/molOctamethylcyclotetrasiloxane
CAS:Controlled ProductFormula:C8H24O4Si4Color and Shape:NeatMolecular weight:296.62Octamethylcyclotetrasiloxane
CAS:<p>S12400 - Octamethylcyclotetrasiloxane</p>Formula:C8H24O4Si4Purity:98%Color and Shape:Clear LiquidMolecular weight:296.616Octamethylcyclotetrasiloxane
CAS:Controlled Product<p>Applications Octamethylcyclotetrasiloxane, is an organometallic reagent , that can be used for the preparation of siloxane polymers, with high surface-hydrophobicity restoration.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Fritz, O., et al.: MRS Online Proceedings Library, 1535 (2012); Vanossi, A., et al.: Condensed Matter (2013);<br></p>Formula:C8H24O4Si4Color and Shape:ColourlessMolecular weight:296.62OCTAMETHYLCYCLOTETRASILOXANE, 98%
CAS:<p>ALD Material<br>Atomic layer deposition (ALD) is a chemically self-limiting deposition technique that is based on the sequential use of a gaseous chemical process. A thin film (as fine as -0.1 Å per cycle) results from repeating the deposition sequence as many times as needed to reach a certain thickness. The major characteristic of the films is the resulting conformality and the controlled deposition manner. Precursor selection is key in ALD processes, namely finding molecules which will have enough reactivity to produce the desired films yet are stable enough to be handled and safely delivered to the reaction chamber.<br>Octamethylcyclotetrasiloxane; D4; Cyclic tetramer; Cyclomethicone; Cyclohexasiloxane; Cyclotetrasiloxane; OMCTS<br>Viscosity: 2.3 cStΔHfus: 18.4 kJ/molΔHvap: 45.6 kJ/molDipole moment: 1.09 debyeVapor pressure, 23 °C: 1 mmDielectric constant: 2.39Ring strain: 1.00 kJ/molSurface tension, 20 °C: 17.9 mN/mCritical temperature: 314 °CCritical pressure: 1.03 mPaSpecific heat: 502 J/g/°Coefficient of thermal expansion: 0.8 x 10-3Cryoscopic constant: 11.2Henry’s law constant, Hc: 3.4 ± 1.7Ea, polym: 79 kJ/molOctanol/water partition coefficient, log Kow: 5.1Basic building block for silicones by ring-opening polymerizationSolubility, water: 50 ?g/l<br></p>Formula:C8H24O4Si4Purity:98%Color and Shape:Colourless LiquidMolecular weight:296.61(7.0-8.0% VINYLMETHYLSILOXANE) - DIMETHYLSILOXANE COPOLYMER, TRIMETHYLSILOXY TERMINATED, 800-1,200 cSt
CAS:<p>VDT-731: Vinylmethylsiloxane-Dimethylsiloxane Copolymer, TMS Terminated (Pendant Functional Fluid)<br>Vinyl containing copolymers are used as crosslinkers in Pt and peroxide 2-part addition cure elastomers.<br>VDT-731 Properties<br>Viscosity: 800-1,200 cStMolecular Weight: 28,000 g/molVinyl (eq/kg): 0.9-1.1<br></p>Color and Shape:LiquidMolecular weight:28000.0
