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CAS NUMBER: 9016-00-6
EC NUMBER: 618-493-1
MOLECULAR FORMULA: C5H6Si
MOLECULAR WEIGHT: 94.18664
E900 (Dimethylpolysiloxane) is a product of an industrial chemical process that is partially derived from silicone.
E900 (Dimethylpolysiloxane) belongs to a group of polymeric organosilicon compounds that are commonly referred to as silicones.
E900 (Dimethylpolysiloxane) is the most widely used silicon-based organic polymer, as its versatility and properties lead to many applications.
E900 (Dimethylpolysiloxane) is particularly known for its unusual rheological (or flow) properties.
E900 (Dimethylpolysiloxane) is optically clear and, in general, inert, non-toxic, and non-flammable.
E900 (Dimethylpolysiloxane) is one of several types of silicone oil (polymerized siloxane).
E900 (Dimethylpolysiloxane)s applications range from contact lenses and medical devices to elastomers.
E900 (Dimethylpolysiloxane) is also present in shampoos (as it makes hair shiny and slippery), food (antifoaming agent), caulk, lubricants and heat-resistant tiles.
The chemical formula for E900 (Dimethylpolysiloxane) is CH3[Si(CH3)2O]nSi(CH3)3, where n is the number of repeating monomer [SiO(CH3)2] units.
The polymerization reaction evolves hydrochloric acid.
For medical and domestic applications, a process was developed in which the chlorine atoms in the silane precursor were replaced with acetate groups.
In this case, the polymerization produces acetic acid, which is less chemically aggressive than HCl.
As a side-effect, the curing process is also much slower in this case.
E900 (Dimethylpolysiloxane) is used in consumer applications, such as silicone caulk and adhesives.
E900 (Dimethylpolysiloxane) precursors with more acid-forming groups and fewer methyl groups, such as methyltrichlorosilane, can be used to introduce branches or cross-links in the polymer chain. Under ideal conditions, each molecule of such a compound becomes a branch point.
E900 (Dimethylpolysiloxane) can be used to produce hard silicone resins.
In a similar manner, precursors with three methyl groups can be used to limit molecular weight, since each such molecule has only one reactive site and so forms the end of a siloxane chain.
Well-defined E900 (Dimethylpolysiloxane) with a low polydispersity index and high homogeneity is produced by controlled anionic ring-opening polymerization of hexamethylcyclotrisiloxane.
E900 (Dimethylpolysiloxane) is possible to synthesize linear block copolymers, heteroarm star-shaped block copolymers and many other macromolecular architectures.
E900 (Dimethylpolysiloxane) is manufactured in multiple viscosities, ranging from a thin pourable liquid (when n is very low), to a thick rubbery semi-solid (when n is very high).
E900 (Dimethylpolysiloxane) molecules have quite flexible polymer backbones (or chains) due to their siloxane linkages, which are analogous to the ether linkages used to impart rubberiness to polyurethanes.
E900 (Dimethylpolysiloxane) is viscoelastic, meaning that at long flow times (or high temperatures).
E900 (Dimethylpolysiloxane) acts like a viscous liquid, similar to honey. However, at short flow times (or low temperatures), it acts like an elastic solid, similar to rubber.
If some E900 (Dimethylpolysiloxane) is left on a surface overnight (long flow time), it will flow to cover the surface and mold to any surface imperfections.
However, if the same E900 (Dimethylpolysiloxane) is poured into a spherical mold and allowed to cure (short flow time), it will bounce like a rubber ball.
The mechanical properties of E900 (Dimethylpolysiloxane) enable this polymer to conform to a diverse variety of surfaces.
Since these properties are affected by a variety of factors, this unique polymer is relatively easy to tune.
E900 (Dimethylpolysiloxane) enables E900 (Dimethylpolysiloxane) to become a good substrate that can easily be integrated into a variety of microfluidic and microelectromechanical systems.
Specifically, the determination of mechanical properties can be decided before E900 (Dimethylpolysiloxane) is cured; the uncured version allows the user to capitalize on myriad opportunities for achieving a desirable elastomer.
Generally, the cross-linked cured version of E900 (Dimethylpolysiloxane) resembles rubber in a solidified form.
E900 (Dimethylpolysiloxane) is widely known to be easily stretched, bent, compressed in all directions.
Depending on the application and field, the user is able to tune the properties based on what is demanded.
Overall E900 (Dimethylpolysiloxane) has a low elastic modulus which enables it to be easily deformed and results in the behavior of a rubber.
Viscoelastic properties of E900 (Dimethylpolysiloxane) can be more precisely measured using dynamic mechanical analysis.
This method requires determination of the material's flow characteristics over a wide range of temperatures, flow rates, and deformations.
Because of E900 (Dimethylpolysiloxane)'s chemical stability, E900 (Dimethylpolysiloxane) is often used as a calibration fluid for this type of experiment.
E900 (Dimethylpolysiloxane) is hydrophobic.
E900 (Dimethylpolysiloxane) can be used to alter the surface chemistry, adding silanol (SiOH) groups to the surface.
Atmospheric air plasma and argon plasma will work for this application.
This treatment renders the E900 (Dimethylpolysiloxane) surface hydrophilic, allowing water to wet it.
The oxidized surface can be further functionalized by reaction with trichlorosilanes.
After a certain amount of time, recovery of the surface's hydrophobicity is inevitable, regardless of whether the surrounding medium is vacuum, air, or water; the oxidized surface is stable in air for about 30 minutes.
Alternatively, for applications where long-term hydrophilicity is a requirement, techniques such as hydrophilic polymer grafting, surface nanostructuring, and dynamic surface modification with embedded surfactants can be of use.
Solid E900 (Dimethylpolysiloxane) samples (whether surface-oxidized or not) will not allow aqueous solvents to infiltrate and swell the material.
Thus PE900 (Dimethylpolysiloxane) structures can be used in combination with water and alcohol solvents without material deformation.
However most organic solvents will diffuse into the material and cause it to swell.
Despite this, some organic solvents lead to sufficiently small swelling that they can be used with E900 (Dimethylpolysiloxane), for instance within the channels of E900 (Dimethylpolysiloxane) microfluidic devices.
The swelling ratio is roughly inversely related to the solubility parameter of the solvent.
Diisopropylamine swells E900 (Dimethylpolysiloxane) to the greatest extent; solvents such as chloroform, ether, and THF swell the material to a large extent.
Solvents such as acetone, 1-propanol, and pyridine swell the material to a small extent.
Alcohols and polar solvents such as methanol, glycerol and water do not swell the material appreciably.
E900 (Dimethylpolysiloxane) is a common surfactant and is a component of defoamers.
E900 (Dimethylpolysiloxane), in a modified form, is used as an herbicide penetrant and is a critical ingredient in water-repelling coatings, such as Rain-X.
E900 (Dimethylpolysiloxane) is commonly used as a stamp resin in the procedure of soft lithography, making it one of the most common materials used for flow delivery in microfluidics chips.
The process of soft lithography consists of creating an elastic stamp, which enables the transfer of patterns of only a few nanometers in size onto glass, silicon or polymer surfaces.
With this type of technique, it is possible to produce devices that can be used in the areas of optic telecommunications or biomedical research.
The stamp is produced from the normal techniques of photolithography or electron-beam lithography.
The resolution depends on the mask used and can reach 6 nm.
The popularity of PDMS in microfluidics area is due to its excellent mechanical properties.
Moreover, compared to other materials, E900 (Dimethylpolysiloxane) possesses superior optical properties, allowing for minimal background and autofluorescence during for fluorescent imaging.
In biomedical (or biological) microelectromechanical systems (bio-MEMS), soft lithography is used extensively for microfluidics in both organic and inorganic contexts.
Silicon wafers are used to design channels, and PDMS is then poured over these wafers and left to harden.
When removed, even the smallest of details is left imprinted in the E900 (Dimethylpolysiloxane).
With this particular E900 (Dimethylpolysiloxane) block, hydrophilic surface modification is conducted using plasma etching techniques.
Plasma treatment disrupts surface silicon-oxygen bonds, and a plasma-treated glass slide is usually placed on the activated side of the PDMS.
Once activation wears off and bonds begin to reform, silicon-oxygen bonds are formed between the surface atoms of the glass and the surface atoms of the PDMS, and the slide becomes permanently sealed to the PDMS, thus creating a waterproof channel.
With these devices, researchers can utilize various surface chemistry techniques for different functions creating unique lab-on-a-chip devices for rapid parallel testing.
E900 (Dimethylpolysiloxane) can be cross-linked into networks and is a commonly used system for studying the elasticity of polymer networks.
E900 (Dimethylpolysiloxane) can be directly patterned by surface-charge lithography.
E900 (Dimethylpolysiloxane) is being used in the making of synthetic gecko adhesion dry adhesive materials, to date only in laboratory test quantities.
E900 (Dimethylpolysiloxane) shows least autofluorescence and is comparable to BoroFloat glass.
E900 (Dimethylpolysiloxane) is used variously in the cosmetic and consumer product industry as well.
E900 (Dimethylpolysiloxane) can be used in the treatment of head lice on the scalp and dimethicone is used widely in
Some cosmetic formulations use dimethicone and related siloxane polymers in concentrations of use up to 15%.
E900 (Dimethylpolysiloxane) compounds such as amodimethicone, are effective conditioners when formulated to consist of small particles and be soluble in water or alcohol/act as surfactants, and are even more conditioning to the hair than common dimethicone and/or dimethicone copolyols.
E900 (Dimethylpolysiloxane) is added to many cooking oils (as an antifoaming agent) to prevent oil splatter during the cooking process.
E900 (Dimethylpolysiloxane) can be found in trace quantities in many fast food items.
Under European food additive regulations, E900 (Dimethylpolysiloxane) is listed as E900.
E900 (Dimethylpolysiloxane) is widely used as a condom lubricant.
Many people are indirectly familiar with E900 (Dimethylpolysiloxane) because E900 (Dimethylpolysiloxane) is an important component in Silly Putty, to which E900 (Dimethylpolysiloxane) imparts its characteristic viscoelastic properties.
Another toy E900 (Dimethylpolysiloxane) is used in is Kinetic Sand. The rubbery, vinegary-smelling silicone caulks, adhesives, and aquarium sealants are also well-known.
E900 (Dimethylpolysiloxane) is also used as a component in silicone grease and other silicone based lubricants, as well as in defoaming agents, mold release agents, damping fluids, heat transfer fluids, polishes, cosmetics, hair conditioners and other applications.
E900 (Dimethylpolysiloxane) can be used as a sorbent for the analysis of headspace (dissolved gas analysis) of food.
E900 (Dimethylpolysiloxane), also known as polydimethylsiloxane (PDMS), is a form of silicone used as an antifoaming agent in food with the European food additive number E900.
E900 (Dimethylpolysiloxane) is commonly used in frying oil due to its good defoaming effectiveness at high temperatures.
E900 (Dimethylpolysiloxane) is a food-grade additive acts as an anti-foaming agent to protect their crew from excessive foaming, splashing or bubbling, which occurs when food is added to very hot oil.
E900 (Dimethylpolysiloxane) is produced by hydrolysis of a mixture of dimethyldichlorosilane and a small quantity of trimethylchlorosilane.
E900 (Dimethylpolysiloxane) is insoluble in polar substances, such as water and in ethanol while soluble in non-polar materials, like in carbon tetrachloride, benzene, chloroform, diethyl ether, toluene and other organic solvents.
E900 (Dimethylpolysiloxane)s applications are widely such as in aerospace, aviation, food, chemical, metallurgy, medical and healthcare fields as most of the silicone products (such as silicone oil, silicone rubber, silicone resin) are obtained by the reaction of polydimethylsiloxanes with regulators, cross-linking agents, capping agents, etc.
E900 (Dimethylpolysiloxane) has many excellent physical and chemical properties, such as high and low-temperature resistance, radiation resistance, oxidation resistance, high air permeability, weather resistance, mold release, hydrophobicity, and physiological inertness.
E900 (Dimethylpolysiloxane) is commonly used as an antifoaming agent in cooking oils, processed foods, and fast food as it prevents the formation of foam on the surface of liquids by reducing the surface tension.
E900 (Dimethylpolysiloxane) is an anti-foaming agent derived from silicone found in a variety of foods, including cooking oil, vinegar, chewing gum, and chocolate.
E900 (Dimethylpolysiloxane)'s added to oil to prevent it from bubbling up when frozen ingredients are added, so it improves the safety and life of the product.
E900 (Dimethylpolysiloxane) is a compound known as a silicone.
E900 (Dimethylpolysiloxane)’s a polymer a large molecule made up of multiple smaller parts – that contains alternating silicon and oxygen atoms.
E900 (Dimethylpolysiloxane) has a wide range of applications, such as skincare, shampoos, and lubricants.
E900 (Dimethylpolysiloxane) is also found in food, where is it used an anti-foaming agent to prevent oil splatters during the cooking process.
E900 (Dimethylpolysiloxane) is more commonly known as a component of Silly Putty, a popular children’s toy with elastic properties.
E900 (Dimethylpolysiloxane) also called dimethyl polysiloxane, polymethylsiloxane or dimethicone, is a silicon-based polymer used as a lubricant and conditioning agent.
E900 (Dimethylpolysiloxane) functions as an anti-foaming agent, skin conditioning agent, occlusive and skin protectant.
E900 (Dimethylpolysiloxane) is found in many cosmetic and hygiene products like nail polish, conditioners, make-up, contact lens solutions, sunscreens, deodorants, and shampoo.
E900 (Dimethylpolysiloxane) fluids of various viscosities also called silicone oils, are used as an intraocular tamponade during retinal detachment repairs.
E900 (Dimethylpolysiloxane) is a stable silicone rubber.
E900 (Dimethylpolysiloxane) has been used as ion selective membrane for ion-sensitive field-effect transistors, as spring material in accelerometers, elastomer on a tactile sensor and as flexible encapsulation material in decouple sensors.
E900 (Dimethylpolysiloxane), Technical, also known as polydimethylsiloxane, is a silicon-based surfactant used in defoamers for over-the-counter drugs and personal care products.
E900 (Dimethylpolysiloxane) is used in protein chromatography and affininty chromatography.
E900 (Dimethylpolysiloxane) was used to determine that postprandial inflammatory response after ingestion of heated oils in obese persons is reduced by the presence of phenol compounds.
The polydimethylsiloxane materials are excellent examples of silicones because of their chemical properties and widespread industrial use.
They can be manufactured as gels, resins, fluids, or elastomers, depending on the cross-linking characteristics.
E900 (Dimethylpolysiloxane) is an antifoaming agent used in fats and oils.
E900 (Dimethylpolysiloxane) prevents foaming and spattering when oils are heated and prevents foam formation during the manufacture of wine, refined sugar, gelatin, and chewing gum.
E900 (Dimethylpolysiloxane) is also termed methyl polysilicone and methyl silicone.
USES:
E900 (Dimethylpolysiloxane) is a silicon-based organic polymer that can be used as an antifoaming agent in fruit and vegetable juices, also it is an anticaking agent in confectionery and flour products, and meanwhile an emulsifier in edible oils essentially free of water.
E900 (Dimethylpolysiloxane) is used in protein chromatography and affininty chromatography.
E900 (Dimethylpolysiloxane) was used to determine that postprandial inflammatory response after ingestion of heated oils in obese persons is reduced by the presence of phenol compounds.
APPLICATION:
-Thermostatic fluids (-50℃ to +200℃),
-Anti-blotting products for photocopying machines,
-Thinning and plastifying agents for RTV’s and silicone sealants,
-Raw material for Antifoam
-Lubricating and heat protecting agents for textile threads ( synthetic sewing threads),
-Ingredients in maintenance products (polishes, wax polishes, floor and furniture polishes, etc.),
-Paint additives
PROPERTIES:
-Very good resistance to high and low temperature
-Good combustion resistance
-Low surface tension
-High compressibility
-Absence of ageing upon exposure to atmospheric agents
-Good oxidation resistance
-Little change in viscosity with temperature
-Good resistance to high and prolonged shear stress
PROPERTIES:
-Melting Point: -60°C
-Flash Point: 214°F
-Density: 0.935 (25°C)
-Viscosity: 10cs (25°C)
STORAGE:
2-8°C Refrigerator.
SYNONYM:
DSSTox_CID_3833
DSSTox_RID_77201
DSSTox_GSID_23833
Polydimethylsiloxane (silicone)
CHEMBL3182512
DTXSID40274001
Tox21_302437
ZINC169746144
NCGC00255308-01
FT-0696318
