3D-FO45367 - octamethylcyclotetrasiloxane

S12400 - Octamethylcyclotetrasiloxane

Applications Octamethylcyclotetrasiloxane, is an organometallic reagent , that can be used for the preparation of siloxane polymers, with high surface-hydrophobicity restoration.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Fritz, O., et al.: MRS Online Proceedings Library, 1535 (2012); Vanossi, A., et al.: Condensed Matter (2013);

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

Octamethylcyclotetrasiloxane, 98%

ALD Material
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.
Octamethylcyclotetrasiloxane; D4; Cyclic tetramer; Cyclomethicone; Cyclohexasiloxane; Cyclotetrasiloxane; OMCTS
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

VDT-731: Vinylmethylsiloxane-Dimethylsiloxane Copolymer, TMS Terminated (Pendant Functional Fluid)
Vinyl containing copolymers are used as crosslinkers in Pt and peroxide 2-part addition cure elastomers.
VDT-731 Properties
Viscosity: 800-1,200 cStMolecular Weight: 28,000 g/molVinyl (eq/kg): 0.9-1.1

Applications Heptamethylcyclotetrasiloxan-2-ol is a derivative of Octamethylcyclotetrasiloxane (O237145), which is an organometallic reagent that can be used in the preparation of siloxane polymers, with high surface-hydrophobicity restoration.
References Fritz, O., et al.: MRS Online Proceedings Library, 1535 (2012); Vanossi, A., et al.: Condensed Matter (2013);

1,3-Diphenyltetramethyldisilazane is an organosilicon compound that can be used for the silylation of organic compounds. It has a number of chemical properties that make it useful in the laboratory. These include its ability to react with n-hexane to form a tetrameric product, its use as a chemical ionization reagent, and its use as a chromatographic modifier. 1,3-Diphenyltetramethyldisilazane has been shown to have a high detection sensitivity for fatty acids and fatty acid esters. This is due to the presence of phenyl groups that are able to bind to these substances. The molecular descriptors for this compound are similar to those found in structural analogs such as hexamethyltrisilazane and octamethylcyclotetrasiloxane.

1,1,3,3,5,5,7,7-Octamethyltetrasiloxane is a cycloaliphatic monomer with the chemical formula CH(CH)SiO. It is produced from tetraethoxy silane and octamethylcyclotetrasiloxane. The synthesis of 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane starts with the reaction of tetraethoxy silane with octamethylcyclotetrasiloxane to produce (CH)SiO and octamethylcyclotetrasiloxane. This reaction produces two moles of octamethylcyclotetrasiloxane for every mole of tetraethoxy silane that reacts. The product 1,1,3,3,5 5,-7 7-octamethyltetrasiloxane is obtained by heating the mixture at 300 °

Polydimethylsiloxane, trimethylsiloxy is used in water-repellent, protective creams lotions. It is also used as surfactant, is used in coating auxiliary agents. It is also used as pharmaceutical intermediates.This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar produ